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# Super, Ultra | 0:00:02 | 0:00:04 | |
# Powerful | 0:00:04 | 0:00:05 | |
# Extreme | 0:00:05 | 0:00:07 | |
# Radical | 0:00:07 | 0:00:09 | |
# Super Human Challenge | 0:00:09 | 0:00:11 | |
# S. U. P. E. R. # | 0:00:13 | 0:00:16 | |
Our quest for superhumans has brought us to Iceland. | 0:00:20 | 0:00:23 | |
We're right on the edge of the Arctic Circle! | 0:00:23 | 0:00:26 | |
It's freezing cold here! | 0:00:26 | 0:00:28 | |
Today, even in the sun, it's still colder than your freezer at home. | 0:00:28 | 0:00:35 | |
To survive out here, you'd need the power of a superhero. | 0:00:35 | 0:00:40 | |
A superhero like Iceman, who never feels cold and uses frost | 0:00:42 | 0:00:46 | |
and ice to defy evil. | 0:00:46 | 0:00:48 | |
But I've heard of a real-life iceman! | 0:00:50 | 0:00:53 | |
A man whose body does not feel the cold. | 0:00:53 | 0:00:56 | |
A man who cannot be frozen! | 0:00:56 | 0:00:58 | |
This is Wim Hof. | 0:01:03 | 0:01:05 | |
He discovered his cold conquering superpowers accidentally, | 0:01:05 | 0:01:08 | |
over 20 years ago, when he saved a man from a frozen lake. | 0:01:08 | 0:01:12 | |
Since then, he's astounded scientists around the world with | 0:01:12 | 0:01:16 | |
his ability to withstand extreme cold, doing so in just his pants. | 0:01:16 | 0:01:21 | |
And this is him! Wim Hof. I'm so excited to meet you. | 0:01:29 | 0:01:33 | |
-Hi there. -Hi. | 0:01:33 | 0:01:34 | |
Now, tell me, are you a real life iceman? | 0:01:34 | 0:01:38 | |
That's what they call me! But I am the Iceman, yes. | 0:01:38 | 0:01:41 | |
Wow! Are you superhuman? | 0:01:41 | 0:01:44 | |
I'm superhuman because I trained a lot. | 0:01:44 | 0:01:46 | |
Are you up for three tests, where I'll go up against you, | 0:01:46 | 0:01:49 | |
I'll be like a human guinea pig | 0:01:49 | 0:01:51 | |
and we'll see what my body does as opposed to what your body does, | 0:01:51 | 0:01:54 | |
which is maybe a little bit different? | 0:01:54 | 0:01:56 | |
I'm always up to a new challenge, so let's do it. | 0:01:56 | 0:01:59 | |
This is Dr Megan John, she is an expedition doctor | 0:02:02 | 0:02:05 | |
and has kept people alive in some of the most dangerous environments. | 0:02:05 | 0:02:09 | |
She's devised three supertests to discover how Tim | 0:02:10 | 0:02:14 | |
and Wim's bodies react differently. | 0:02:14 | 0:02:16 | |
So, Dr Megan, I thought we'd be filming up there | 0:02:20 | 0:02:22 | |
in the mountains with the ice, but you've brought us here to the docks. | 0:02:22 | 0:02:29 | |
Why are we here? | 0:02:29 | 0:02:30 | |
For this first experiment, | 0:02:30 | 0:02:32 | |
I need to be able to control the conditions. | 0:02:32 | 0:02:34 | |
I've chilled one of these containers to -10 degrees Celsius, | 0:02:34 | 0:02:37 | |
I'm going to put the two of you in it, | 0:02:37 | 0:02:39 | |
close the door and see what happens. | 0:02:39 | 0:02:42 | |
-10! | 0:02:42 | 0:02:43 | |
Dr Megan will be testing who can stand | 0:02:46 | 0:02:48 | |
freezing temperatures for the longest. | 0:02:48 | 0:02:51 | |
This container is about 12 degrees colder than your fridge at home | 0:02:51 | 0:02:54 | |
and as the test goes on, it will get as cold as a freezer. | 0:02:54 | 0:02:58 | |
This test is being supervised by medical professionals | 0:02:58 | 0:03:01 | |
and you should never try anything like this at home. | 0:03:01 | 0:03:04 | |
It's extremely dangerous. | 0:03:04 | 0:03:06 | |
This is my control centre for today. I've got some great equipment. | 0:03:08 | 0:03:11 | |
Firstly, thermal imaging camera. | 0:03:11 | 0:03:13 | |
It's going to give me some pictures of how the two of your bodies | 0:03:13 | 0:03:16 | |
are losing heat from the outside. | 0:03:16 | 0:03:18 | |
Thermal cameras turn heat rays into different colours. | 0:03:18 | 0:03:22 | |
The white areas are the hottest, red is warm, yellow is cold | 0:03:22 | 0:03:25 | |
and blue is the coldest. | 0:03:25 | 0:03:27 | |
Wow! Cool! | 0:03:27 | 0:03:29 | |
In order for it to be scientifically accurate, | 0:03:29 | 0:03:32 | |
I need you to do it in your underpants. | 0:03:32 | 0:03:35 | |
In my pants? | 0:03:35 | 0:03:36 | |
Yep, in your pants. | 0:03:36 | 0:03:37 | |
In addition, I want your core body temperature, | 0:03:37 | 0:03:41 | |
so that's the temperature on the inside of your body. | 0:03:41 | 0:03:44 | |
How do you manage that? | 0:03:44 | 0:03:45 | |
Two choices. Either we could put a thermometer up your bottoms... | 0:03:45 | 0:03:49 | |
Oh, no, don't do that. | 0:03:49 | 0:03:51 | |
But I've decided we'll go a bit high tech today so I've got these | 0:03:51 | 0:03:54 | |
core body transmitters, which I'd like you to swallow. | 0:03:54 | 0:03:57 | |
So how does that work? | 0:03:57 | 0:03:58 | |
It transmits the temperature to you on the outside? | 0:03:58 | 0:04:01 | |
Exactly, I've got a reader here. | 0:04:01 | 0:04:03 | |
That really is not nice. Don't try anything like this at home. | 0:04:07 | 0:04:11 | |
So, chamber set for -10? | 0:04:11 | 0:04:13 | |
OK, boys, kits off, ready to go! | 0:04:15 | 0:04:18 | |
Let's go! | 0:04:18 | 0:04:20 | |
-10 in my pants. | 0:04:20 | 0:04:22 | |
The normal human temperature is 37 degrees Celsius. | 0:04:24 | 0:04:27 | |
If your body gets colder than that you get goosebumps | 0:04:27 | 0:04:31 | |
and start to shiver. | 0:04:31 | 0:04:32 | |
If you drop to 35 degrees, you are dangerously cold | 0:04:32 | 0:04:35 | |
and we call this hypothermia. | 0:04:35 | 0:04:38 | |
You start to move slowly, your fingers, toes and lips go blue. | 0:04:38 | 0:04:42 | |
Soon, you need to wee. | 0:04:42 | 0:04:44 | |
Then your brain becomes confused. | 0:04:44 | 0:04:47 | |
Eventually, your kidneys, liver, lungs and heart | 0:04:47 | 0:04:49 | |
may shut down and you could die. | 0:04:49 | 0:04:52 | |
If at any point I think your health is in danger, | 0:04:56 | 0:04:59 | |
I'm going to pull you out. | 0:04:59 | 0:05:01 | |
Three. Two. One. Head in. | 0:05:01 | 0:05:06 | |
It really is quite cold. | 0:05:09 | 0:05:11 | |
So already they'll be going into feeling a little bit shocked | 0:05:11 | 0:05:14 | |
first of all. | 0:05:14 | 0:05:16 | |
Dr Megan has given them a few simple games to play, but not for fun. | 0:05:16 | 0:05:21 | |
-Snowball? -Exactly right! A snowball. | 0:05:21 | 0:05:24 | |
Being dangerously cold affects the brain as well as the body, | 0:05:24 | 0:05:28 | |
so if Tim and Wim become confused playing these games, | 0:05:28 | 0:05:32 | |
Dr Megan will know it's time to get them out! | 0:05:32 | 0:05:34 | |
I don't know if you can see this on the TimCam | 0:05:36 | 0:05:39 | |
but my skin's gone all goose bumps. I've got a lot of goosebumps here. | 0:05:39 | 0:05:42 | |
Goosebumps are made when small muscles in your skin tighten up, | 0:05:42 | 0:05:47 | |
making your hairs stand on end. | 0:05:47 | 0:05:49 | |
This is because thousands of years ago, people were a lot hairier, | 0:05:49 | 0:05:54 | |
so when their hair stood on end, it trapped the heat next | 0:05:54 | 0:05:57 | |
to their skin, keeping them warm, a bit like wearing a jumper. | 0:05:57 | 0:06:02 | |
And after ten minutes, Tim's body is covered in goosebumps, | 0:06:02 | 0:06:06 | |
but Wim doesn't have any. | 0:06:06 | 0:06:08 | |
This is a thing that swims through really cold water. Like you. | 0:06:08 | 0:06:12 | |
Wim just looks completely comfortable, | 0:06:12 | 0:06:14 | |
like he's sat in his living room watching the telly. | 0:06:14 | 0:06:17 | |
-A seal. -A seal! That's right, he knows that, there we go. | 0:06:17 | 0:06:21 | |
Oh, wow! OK, let's keep going. | 0:06:21 | 0:06:24 | |
Tim really is starting to feel the cold now. | 0:06:24 | 0:06:26 | |
He's shivering, he's rubbing all his muscles together. | 0:06:26 | 0:06:29 | |
He's what we call tremulous, | 0:06:29 | 0:06:30 | |
so very, very light little shakes all over his body. | 0:06:30 | 0:06:33 | |
15 minutes in and the temperature in the cold room has | 0:06:33 | 0:06:36 | |
gone down to -11.5 degrees. | 0:06:36 | 0:06:40 | |
Oh, wow. Got a lot of goosebumps now. | 0:06:40 | 0:06:43 | |
And slightly shivering. | 0:06:43 | 0:06:47 | |
Everything in Tim's body right now | 0:06:47 | 0:06:49 | |
is trying to launch an attack on the cold. | 0:06:49 | 0:06:51 | |
His body is saying, "I don't like this, get me out of it." | 0:06:51 | 0:06:55 | |
Wim is not shivering, he's not moving, he's not confused. | 0:06:55 | 0:06:59 | |
He's not really doing any of the things | 0:06:59 | 0:07:02 | |
I would expect a normal human to do. | 0:07:02 | 0:07:04 | |
I seem to have a pain in my back. Not on my back, but inside. | 0:07:04 | 0:07:08 | |
He's just done something really classic, rubbing the area | 0:07:08 | 0:07:11 | |
on his lower back, which is where the kidneys are. | 0:07:11 | 0:07:14 | |
As you get really cold, you end up getting to the point | 0:07:14 | 0:07:17 | |
where you wet yourself. | 0:07:17 | 0:07:18 | |
In freezing cold like this, your heart has to work much harder | 0:07:20 | 0:07:23 | |
to pump blood around your body. | 0:07:23 | 0:07:26 | |
Now, to make it easier, your body gets | 0:07:26 | 0:07:29 | |
rid of things in your blood that it doesn't need, like excess water. | 0:07:29 | 0:07:33 | |
Now, your kidneys do this. | 0:07:33 | 0:07:35 | |
There are two of them. They're about the size of a mobile phone. | 0:07:35 | 0:07:39 | |
The unwanted water in your blood turns into wee. | 0:07:39 | 0:07:43 | |
All this extra work your kidneys are doing makes them really ache. | 0:07:43 | 0:07:47 | |
25 minutes into the test and it's -12 degrees! | 0:07:49 | 0:07:54 | |
It's so cold that Tim's heart can not provide enough warm blood | 0:07:54 | 0:07:57 | |
to his whole body. | 0:07:57 | 0:07:59 | |
Most of his blood is being sent to his important inner organs. | 0:07:59 | 0:08:02 | |
So the outer parts of his body aren't getting much blood at all. | 0:08:02 | 0:08:07 | |
My knuckles have gone slightly blue here. | 0:08:07 | 0:08:10 | |
Yeah, the knuckles have gone blue. | 0:08:10 | 0:08:12 | |
In fact, my hand's gone blue. | 0:08:12 | 0:08:14 | |
Wim, how you feeling? You shivering a bit with the goosebumps? | 0:08:14 | 0:08:17 | |
Yeah. | 0:08:17 | 0:08:19 | |
Even Wim has started to get goosebumps now. | 0:08:19 | 0:08:22 | |
I don't have to pull him out just yet. | 0:08:22 | 0:08:24 | |
So after 28 minutes and with the cold room at -12 degrees, | 0:08:24 | 0:08:29 | |
goosebumps have appeared on Wim. | 0:08:29 | 0:08:31 | |
This is a whole 23 minutes, | 0:08:31 | 0:08:33 | |
and 2 degrees colder than when they appeared on Tim. | 0:08:33 | 0:08:36 | |
Tim, how are you feeling? | 0:08:36 | 0:08:39 | |
Freezing cold, Dr Megan. | 0:08:39 | 0:08:41 | |
Tim's brain is now so cold | 0:08:41 | 0:08:44 | |
he is losing the ability to think properly. | 0:08:44 | 0:08:47 | |
What have you done? | 0:08:47 | 0:08:48 | |
It's a definite sign of hypothermia. | 0:08:48 | 0:08:51 | |
INDISTINCT CHAT | 0:08:51 | 0:08:53 | |
Why did you do that? | 0:08:57 | 0:08:58 | |
Checking their core body temperatures. | 0:08:58 | 0:09:01 | |
So it's 643. | 0:09:01 | 0:09:02 | |
The average human body temperature is 37 degrees, | 0:09:03 | 0:09:07 | |
and after over 30 minutes with the temperature lower than -12 degrees, | 0:09:07 | 0:09:11 | |
Wim's core temperature has dropped by only half a degree. | 0:09:11 | 0:09:16 | |
Mine... | 0:09:16 | 0:09:17 | |
Tim, tell me how you're feeling. | 0:09:19 | 0:09:21 | |
Very cold now. Very, very cold indeed. | 0:09:21 | 0:09:24 | |
I'm down just below 35. | 0:09:24 | 0:09:27 | |
Tim's body temperature has dropped by more than 2 degrees, this means | 0:09:27 | 0:09:32 | |
it's now under 35 degrees and he's starting to suffer from hypothermia. | 0:09:32 | 0:09:36 | |
His body can't take much more. | 0:09:36 | 0:09:39 | |
Honestly, I'm probably going to pull him quite soon. | 0:09:40 | 0:09:43 | |
Cos he's in pain everywhere. | 0:09:43 | 0:09:45 | |
Come on, people, I can do this. | 0:09:45 | 0:09:47 | |
OK, so Tim is now in so much pain, I don't think it's safe for him | 0:09:47 | 0:09:52 | |
to continue any more, so I want him out. | 0:09:52 | 0:09:55 | |
Boys, can you get him out? | 0:09:55 | 0:09:57 | |
Tim, Tim, you need to get out now. | 0:09:57 | 0:10:00 | |
-Get out. -I shall finish this in the warmth. Ah! | 0:10:00 | 0:10:07 | |
It's too dangerous for Tim to carry on. He's turning blue and there's | 0:10:07 | 0:10:11 | |
so little blood going to his arms and legs that he can't even walk. | 0:10:11 | 0:10:15 | |
Can we get him in the hot bath now? | 0:10:15 | 0:10:17 | |
After 37 minutes and 13 seconds in this freezing room, | 0:10:17 | 0:10:22 | |
Tim stumbles into the recovery bath, he's in pain and he's very confused. | 0:10:22 | 0:10:27 | |
It's on fire! Like internally on fire, guys. | 0:10:27 | 0:10:30 | |
-That's a bit of fun, isn't it? -This is a lukewarm bath. | 0:10:30 | 0:10:34 | |
-It's not as warm as you'd have at home. -It's really, really hot! | 0:10:34 | 0:10:37 | |
But unbelievably, Wim is still in the cold room. | 0:10:37 | 0:10:41 | |
And now he's doing yoga?! | 0:10:41 | 0:10:43 | |
So, clearly, Wim, having already been in there for the ten minutes | 0:10:43 | 0:10:46 | |
it's taken to get Tim out of there and into the bath, | 0:10:46 | 0:10:49 | |
Wim is stood up, holding himself. | 0:10:49 | 0:10:51 | |
I think the experiment has reached its conclusion, | 0:10:51 | 0:10:54 | |
which is that Wim has some super powers, | 0:10:54 | 0:10:56 | |
which Tim, a normal human being, does not have. | 0:10:56 | 0:10:59 | |
So I'd like to call an end to the experiment | 0:10:59 | 0:11:01 | |
and get Wim out of there too. | 0:11:01 | 0:11:03 | |
Wim still has an ordinary body temperature of 36.5 degrees | 0:11:03 | 0:11:07 | |
after 40 minutes of extraordinarily freezing cold! | 0:11:07 | 0:11:12 | |
You see how perfectly you walked out, Wim. How are you feeling? | 0:11:12 | 0:11:15 | |
-OK. -You've got ice cubes around your beard. | 0:11:15 | 0:11:19 | |
So how is Wim able to do this? | 0:11:19 | 0:11:22 | |
It seems he can control his body temperature. | 0:11:22 | 0:11:25 | |
Now, there is a part of your brain called the hypothalamus | 0:11:25 | 0:11:28 | |
and its job is to keep your body at 37 degrees. | 0:11:28 | 0:11:32 | |
It's about the size of a peanut. | 0:11:32 | 0:11:34 | |
Your hypothalamus works automatically. | 0:11:34 | 0:11:36 | |
You cannot control it or override it. | 0:11:36 | 0:11:39 | |
What's amazing is that Wim can control his hypothalamus | 0:11:39 | 0:11:43 | |
and can make himself hotter if he wants to. | 0:11:43 | 0:11:46 | |
So before he went into the tank, | 0:11:46 | 0:11:48 | |
he turned his temperature up to 39 degrees. | 0:11:48 | 0:11:51 | |
We're here on the Vatnajokull Glacier. | 0:11:54 | 0:11:58 | |
The ice can get as much as 1,000 metres thick. | 0:11:58 | 0:12:02 | |
And it gets cold, very, very cold! | 0:12:02 | 0:12:06 | |
But luckily, people are amazingly, fantastically adaptable. | 0:12:06 | 0:12:11 | |
Especially the Kallallit people from Greenland. | 0:12:11 | 0:12:14 | |
They have more blood cells than people from warmer areas, | 0:12:14 | 0:12:17 | |
which generates more heat, and their bodies are small and bulky, | 0:12:17 | 0:12:21 | |
which is the best shape to protect you from the cold. | 0:12:21 | 0:12:25 | |
They eat loads of fat, from food like seal blubber, | 0:12:25 | 0:12:28 | |
which their bodies then burn, to create heat and keep them warm. | 0:12:28 | 0:12:32 | |
In supertest two, Dr Megan is testing Wim | 0:12:40 | 0:12:43 | |
and Tim's ability to stay warm whilst exercising in the cold. | 0:12:43 | 0:12:46 | |
She has marked out a course on the largest ice cap in Europe | 0:12:46 | 0:12:50 | |
and she wants to see who can run for the longest. | 0:12:50 | 0:12:53 | |
The weather changes in an instant here, from sunlight to blizzards, | 0:12:53 | 0:12:56 | |
but it's always very cold. | 0:12:56 | 0:12:59 | |
OK, so this is the course? | 0:12:59 | 0:13:01 | |
Yep, I've marked out a 1 kilometre course with these flags and I'd | 0:13:01 | 0:13:04 | |
like the two of you to try and do it in just your shorts, barefoot. | 0:13:04 | 0:13:08 | |
-Barefoot? -Barefoot. -I'm absolutely loving this. | 0:13:08 | 0:13:12 | |
I might get frostbite, this is seriously cold. | 0:13:12 | 0:13:14 | |
That is a danger here today, which is why I'll be monitoring | 0:13:14 | 0:13:17 | |
your core body temperature, your heart rate, talking to you and I've | 0:13:17 | 0:13:21 | |
brought a safety vehicle here with me, with a search and rescue team. | 0:13:21 | 0:13:24 | |
OK, I feel a bit reassured now. | 0:13:24 | 0:13:26 | |
Everybody's body is different but an average, fit adult would normally | 0:13:26 | 0:13:30 | |
have a heart rate during exercise of around 120 beats per minute. | 0:13:30 | 0:13:35 | |
But running in the freezing cold puts extra stress on your body. | 0:13:35 | 0:13:38 | |
You're more likely to damage a muscle. | 0:13:40 | 0:13:43 | |
With no shoes, you could freeze your toes and get frostbite. | 0:13:43 | 0:13:46 | |
You use up oxygen much more quickly, | 0:13:46 | 0:13:48 | |
and could become confused, or even faint. | 0:13:48 | 0:13:50 | |
Your heart beats faster | 0:13:50 | 0:13:52 | |
and if you reach your maximum heart rate, you could collapse. | 0:13:52 | 0:13:55 | |
In extreme cases, you could have a heart attack and you could die. | 0:13:55 | 0:13:59 | |
You seem really relaxed about this. You're ready to go. | 0:14:01 | 0:14:03 | |
What have you done? What's the secret? | 0:14:03 | 0:14:06 | |
I trained a lot and to connect the mind with the body. | 0:14:06 | 0:14:09 | |
And how do you do that? | 0:14:09 | 0:14:11 | |
Sort of a meditation, going deeper within yourself | 0:14:11 | 0:14:14 | |
and reawaken the natural ability to cope with cold. | 0:14:14 | 0:14:19 | |
So do you think that before we do the test you could teach me that, | 0:14:19 | 0:14:22 | |
at least a little bit? | 0:14:22 | 0:14:24 | |
I will give the principles, but you've got to build the house. | 0:14:24 | 0:14:27 | |
OK. Let's try it. | 0:14:27 | 0:14:29 | |
Meditation is a way of focusing your mind | 0:14:31 | 0:14:33 | |
by using special breathing and concentration. | 0:14:33 | 0:14:37 | |
Make yourself as light as possible. | 0:14:37 | 0:14:39 | |
You need to try and reconnect with your body. | 0:14:39 | 0:14:42 | |
You should only try meditating if you're with an expert | 0:14:42 | 0:14:45 | |
and Wim has trained for over 20 years. | 0:14:45 | 0:14:48 | |
Totally in. Totally out. Once again. Totally in. Totally out. | 0:14:48 | 0:14:52 | |
Our thermal camera image shows that | 0:14:52 | 0:14:55 | |
Wim's body temperature is beginning to rise. | 0:14:55 | 0:14:58 | |
And the same thing is happening to Tim. | 0:14:58 | 0:15:00 | |
It's really interesting to see that despite the fact | 0:15:01 | 0:15:04 | |
that it's 0 degrees, Tim's starting to sweat | 0:15:04 | 0:15:07 | |
Tim's core body temperature, which started at 37 degrees, is going up. | 0:15:08 | 0:15:13 | |
So fascinatingly, he's gone up by nearly a degree, to 38.18. | 0:15:13 | 0:15:17 | |
What's your heart rate doing at the moment? | 0:15:17 | 0:15:19 | |
Still running at around 72. | 0:15:19 | 0:15:21 | |
So you've brought it down a little bit from before. | 0:15:21 | 0:15:25 | |
OK, so 41.47. So whenever you're ready, Wim. 62. | 0:15:25 | 0:15:31 | |
They're ready to go. | 0:15:31 | 0:15:33 | |
Are you good? Let's do this now. | 0:15:33 | 0:15:37 | |
Let's go. | 0:15:37 | 0:15:38 | |
Normally, Tim's heart rate when he's running is 121 beats per minute, | 0:15:40 | 0:15:45 | |
but in these freezing conditions, it's beating a lot faster. | 0:15:45 | 0:15:49 | |
Heart rate is now at 167. | 0:15:49 | 0:15:53 | |
Wim, can you let me know your heart rate? | 0:15:53 | 0:15:56 | |
82. | 0:15:56 | 0:15:57 | |
82. So we've got a heart rate of 82. Tim's is nearly double. | 0:15:57 | 0:16:01 | |
Blood carries oxygen and sugars round the body. | 0:16:03 | 0:16:06 | |
When you exercise, you use more oxygen and sugar | 0:16:06 | 0:16:10 | |
so your heart needs to pump faster. | 0:16:10 | 0:16:12 | |
Now, when you're cold, your body needs more oxygen and sugar too. | 0:16:12 | 0:16:16 | |
That also makes your heart pump faster. | 0:16:16 | 0:16:19 | |
So when you run in the freezing cold, your heart has to pump | 0:16:19 | 0:16:22 | |
extremely hard to keep you moving and keep you warm. | 0:16:22 | 0:16:26 | |
Running on the ice in the coldest glacier in Europe. | 0:16:28 | 0:16:33 | |
It's the 250 metre mark. | 0:16:33 | 0:16:35 | |
We've gone past the first flag. | 0:16:35 | 0:16:37 | |
Tim is starting to struggle | 0:16:37 | 0:16:39 | |
but Wim is fine, he's conserving his energy and pacing himself. | 0:16:39 | 0:16:43 | |
Wim's heart rate is going at 82 beats per minute, | 0:16:43 | 0:16:46 | |
a very normal response to exercise. | 0:16:46 | 0:16:48 | |
Tim's heart's under an awful lot of pressure. | 0:16:49 | 0:16:52 | |
Coming down the hill now. Down the hill. | 0:16:52 | 0:16:55 | |
Tim, what's your heart rate now? | 0:16:55 | 0:16:56 | |
Heart rate is up at 178. | 0:16:56 | 0:16:58 | |
84. | 0:16:58 | 0:17:01 | |
Wim's heart rate is incredibly low at only 84 beats per minute, | 0:17:01 | 0:17:05 | |
ut Tim's is now 178. This is dangerously fast. | 0:17:05 | 0:17:10 | |
This is getting touch and go as to whether I can let them | 0:17:10 | 0:17:13 | |
go on any more. Boys, if you could just stop | 0:17:13 | 0:17:15 | |
so I can check your core body temperature before you carry on. | 0:17:15 | 0:17:19 | |
HE PANTS | 0:17:19 | 0:17:21 | |
I want you to look at my feet. | 0:17:22 | 0:17:24 | |
In extreme cold, your body must keep your vital organs warm | 0:17:24 | 0:17:28 | |
to keep you alive. | 0:17:28 | 0:17:30 | |
This means that your body concentrates on getting | 0:17:30 | 0:17:33 | |
nice warm blood to these bits. | 0:17:33 | 0:17:35 | |
Other less important bits, like your fingers and toes, | 0:17:35 | 0:17:38 | |
they get less blood. | 0:17:38 | 0:17:39 | |
With less blood keeping them warm, these bits start to feel numb, | 0:17:39 | 0:17:43 | |
then they start to freeze. | 0:17:43 | 0:17:45 | |
The skin on them blisters turns black. | 0:17:45 | 0:17:48 | |
Eventually, they can die and drop off. | 0:17:48 | 0:17:52 | |
Tim's numb feet are an early warning sign of frostbite. | 0:17:52 | 0:17:57 | |
So you're going, you're still going at 37.5. | 0:17:57 | 0:18:00 | |
This is extraordinary. I did not think this would be possible at all. | 0:18:02 | 0:18:06 | |
I'm amazed that he's carried this far | 0:18:06 | 0:18:08 | |
but I'm starting to get very worried about Tim's general health. | 0:18:08 | 0:18:11 | |
His heart rate is going nearly three times | 0:18:11 | 0:18:13 | |
what I would be comfortable with. | 0:18:13 | 0:18:15 | |
They've passed the 750 metre mark. | 0:18:15 | 0:18:18 | |
Tim is uncoordinated, confused and his heart rate is critically high, | 0:18:18 | 0:18:22 | |
while Wim's body condition, well, it's has hardly changed at all. | 0:18:22 | 0:18:26 | |
Now, I think, interestingly, | 0:18:26 | 0:18:28 | |
purposability determination's kicked in. | 0:18:28 | 0:18:31 | |
One of the signs of hypothermia is confusion | 0:18:31 | 0:18:33 | |
and Tim is starting to exhibit a little bit of confusion. | 0:18:33 | 0:18:36 | |
He thinks he can manage more than he can. | 0:18:36 | 0:18:38 | |
What normally happens with people when they get very cold | 0:18:38 | 0:18:41 | |
is the thing they die of is doing more than they should | 0:18:41 | 0:18:43 | |
because they start to get fighty and aggressive. | 0:18:43 | 0:18:46 | |
But this is absolutely more than I ever hoped or dreamed of | 0:18:46 | 0:18:49 | |
being able to do. In bare feet. Across a glacier. | 0:18:49 | 0:18:53 | |
Can I have your heart rates now? | 0:18:53 | 0:18:55 | |
-It's now at 184. -92. | 0:18:55 | 0:18:57 | |
Wow. Coming up to 1,000 metres Wim's heart rate is unbelievably low. | 0:18:57 | 0:19:02 | |
But Tim's has now moved into a critical state, | 0:19:02 | 0:19:05 | |
his heart really can't take much more of this. | 0:19:05 | 0:19:09 | |
I'm using every single molecule of energy to make it to those flags. | 0:19:09 | 0:19:14 | |
I've got pain in my feet. | 0:19:15 | 0:19:17 | |
Tim, I don't think it's safe for you to continue. | 0:19:17 | 0:19:20 | |
HE PANTS | 0:19:22 | 0:19:23 | |
Tim's finished the race, but in doing so | 0:19:26 | 0:19:29 | |
has put himself in serious danger. | 0:19:29 | 0:19:31 | |
Dr Megan and the team have to cover him in insulating materials to | 0:19:31 | 0:19:35 | |
keep him warm as blood starts to return to his outer body. | 0:19:35 | 0:19:39 | |
I'm trying to keep his head lower than his heart | 0:19:39 | 0:19:42 | |
so that the blood supply gets back to his heart. | 0:19:42 | 0:19:44 | |
I'm trying to feed him some sugar, cos you get a rapid reduction | 0:19:44 | 0:19:47 | |
in sugar when you do so much exercise. | 0:19:47 | 0:19:49 | |
The rest of me feels OK, it's just the feet. | 0:19:49 | 0:19:52 | |
I can't move them now. | 0:19:52 | 0:19:53 | |
It'll be painful for Tim all over, but especially in his feet. | 0:19:53 | 0:19:57 | |
Tim needs to get off the mountain and into a recovery bath fast! | 0:19:59 | 0:20:03 | |
But remarkably, Wim is completely fine! | 0:20:03 | 0:20:07 | |
So right now, do you feel in control of your heart rate? | 0:20:07 | 0:20:09 | |
-Yeah. -In control of your body temperature? -Yes. | 0:20:09 | 0:20:12 | |
-You don't feel unwell in any way? -No. -You don't feel sick? | 0:20:12 | 0:20:15 | |
-No. -No pain anywhere in your body? -Nothing. | 0:20:15 | 0:20:18 | |
Remarkable. Quite remarkable. | 0:20:18 | 0:20:20 | |
OK. We've just come off the mountain now. | 0:20:20 | 0:20:23 | |
Dr Megan's looked at my feet and it seems I might have frostbite | 0:20:23 | 0:20:26 | |
so they're taking me back to the hotel | 0:20:26 | 0:20:28 | |
to get some sort of warming bath on them. | 0:20:28 | 0:20:31 | |
It'll be painful, but my feet will return to normal. | 0:20:32 | 0:20:35 | |
Sometimes the human body has an amazing ability to recover. | 0:20:35 | 0:20:39 | |
In 1999, Swedish Skier Anne Bagenholm fell | 0:20:39 | 0:20:43 | |
headfirst into a frozen water and was trapped under the ice. | 0:20:43 | 0:20:47 | |
Luckily, she found an air pocket and was able to breath but eventually | 0:20:47 | 0:20:51 | |
she got so cold, extreme hypothermia actually stopped her heart! | 0:20:51 | 0:20:56 | |
When she was cut out of the ice, | 0:20:56 | 0:20:58 | |
Anne's heart had stopped for 80 minutes. | 0:20:58 | 0:21:02 | |
Her body temperature was so cold that she should have been dead. | 0:21:02 | 0:21:06 | |
Amazingly, as Anne's body slowly warmed up, | 0:21:06 | 0:21:10 | |
signs of life began to show. | 0:21:10 | 0:21:11 | |
And incredibly, ten days later, she was brought fully back to life. | 0:21:11 | 0:21:16 | |
Anne now works as a doctor in the hospital that saved her life. | 0:21:16 | 0:21:21 | |
In the third and final supertest, Dr Megan wants to see | 0:21:29 | 0:21:33 | |
how their bodies react in cold water. | 0:21:33 | 0:21:35 | |
She's set up a 300 metre swim in a freezing Arctic lake. | 0:21:35 | 0:21:40 | |
This swim is so dangerous, we have a specialist safety crew on standby. | 0:21:40 | 0:21:45 | |
Wim, with his extraordinary super powers, tells me that he | 0:21:45 | 0:21:49 | |
can swim in his swimming trunks for approximately ten minutes. | 0:21:49 | 0:21:53 | |
-In your trunks? -Don't be mistaken, it needs a lot of trainings. | 0:21:53 | 0:21:56 | |
Otherwise, hypothermia's a real threat to the health. | 0:21:56 | 0:22:00 | |
I'd imagine it's a fatal threat to the health. | 0:22:00 | 0:22:02 | |
So we have to do this controlled, | 0:22:02 | 0:22:04 | |
but then this experiment is an adventure. | 0:22:04 | 0:22:07 | |
And we're thinking you'll give that a go as well | 0:22:07 | 0:22:09 | |
so we can test your body. | 0:22:09 | 0:22:11 | |
I'm going to try the swimming in my shorts with the icebergs? | 0:22:11 | 0:22:14 | |
-Tim, I will make sure you don't come to any harm. -That's reassuring. | 0:22:14 | 0:22:18 | |
And I am there too. I am the Iceman. | 0:22:18 | 0:22:20 | |
You're the Iceman, that's right, you are. | 0:22:20 | 0:22:23 | |
And I'm a man who needs to get into some swimming trunks. | 0:22:23 | 0:22:26 | |
Freezing cold water is extremely dangerous because | 0:22:26 | 0:22:29 | |
it takes away heat from your body 15 times quicker than air. | 0:22:29 | 0:22:33 | |
When swimming in icy water, your muscles get cold so quickly | 0:22:33 | 0:22:37 | |
that they stop working, which means you can't swim, | 0:22:37 | 0:22:40 | |
which means you can drown. | 0:22:40 | 0:22:42 | |
The freezing temperature can also cause your body to go into shock. | 0:22:42 | 0:22:46 | |
And you could suffer a heart attack and die. | 0:22:46 | 0:22:48 | |
This is incredibly dangerous. | 0:22:49 | 0:22:51 | |
If you do have a glacial lagoon in your back garden, | 0:22:51 | 0:22:54 | |
do not try this at home. | 0:22:54 | 0:22:56 | |
And even if you haven't, don't try this in any freezing water. | 0:22:56 | 0:23:00 | |
-OK, shall we do this? -Yes. | 0:23:00 | 0:23:03 | |
-Good luck, Tim. -Right, I'm going to try my best. | 0:23:03 | 0:23:06 | |
It's got icebergs in! | 0:23:07 | 0:23:09 | |
Oh, that's cold. That's really quite cold! | 0:23:16 | 0:23:19 | |
-Tell me what your heart rate's doing, Tim. -110. -And Wim? | 0:23:19 | 0:23:23 | |
-72. -72? Brilliant. Well done. | 0:23:23 | 0:23:26 | |
-Good grief, that's cold! -How are your feet feeling, Tim? | 0:23:26 | 0:23:30 | |
They're very, very cold. Very cold. I've got goosebumps. | 0:23:30 | 0:23:35 | |
Gosh, this is cold! This is really cold. | 0:23:38 | 0:23:40 | |
You're already starting to show a lot of stress from the cold. | 0:23:40 | 0:23:43 | |
-I'm really shivering below more than above. -More than above? | 0:23:43 | 0:23:46 | |
There's a lot of pain in my ankles and my knees. | 0:23:46 | 0:23:49 | |
Do you feel able to take another step? | 0:23:49 | 0:23:52 | |
I could probably take one more. | 0:23:52 | 0:23:54 | |
OK, tell me what your heart rate's doing now. | 0:23:58 | 0:24:01 | |
-It's gone up. It's up at 114. -And Wim? | 0:24:01 | 0:24:05 | |
-62. -OK, Tim, I think this is getting potentially | 0:24:05 | 0:24:09 | |
a little bit too dangerous. Putting too much strain on your heart. | 0:24:09 | 0:24:13 | |
-Can you come on out and get in the bath now? -Yeah. | 0:24:13 | 0:24:15 | |
Yeah, I'm coming. | 0:24:15 | 0:24:17 | |
That was really cold. | 0:24:23 | 0:24:26 | |
What's really strange is, | 0:24:26 | 0:24:28 | |
I completely lost the feeling in my feet. | 0:24:28 | 0:24:30 | |
To swim safely in freezing water, | 0:24:30 | 0:24:33 | |
you'd need a specialised semi-dry wet suit made from 7mm thick rubber. | 0:24:33 | 0:24:38 | |
Tim may not be superhuman but at least he has a cool suit! | 0:24:39 | 0:24:42 | |
Wim, let's do this! Let me just get this right. | 0:24:44 | 0:24:48 | |
Even in the super suit, there are still some risks? | 0:24:48 | 0:24:53 | |
Yes, this is still potentially very dangerous. | 0:24:53 | 0:24:56 | |
-OK, boys, off you go. -Good luck, Wim. -Good luck. | 0:24:56 | 0:25:00 | |
Wow. | 0:25:00 | 0:25:02 | |
Wim is going in fast. | 0:25:02 | 0:25:05 | |
-Are you ready? -I'm totally ready. | 0:25:05 | 0:25:08 | |
I'm going "Wimming". This is swimming with Wim. | 0:25:08 | 0:25:12 | |
It's the moment of truth, Wim is going to attempt | 0:25:12 | 0:25:15 | |
a 300 metre swim in freezing cold water. | 0:25:15 | 0:25:19 | |
A normal human being could suffer deadly body shock | 0:25:19 | 0:25:22 | |
in water this cold. | 0:25:22 | 0:25:23 | |
Wim should not be able to submerge his body in this | 0:25:23 | 0:25:26 | |
without seriously risking his health. | 0:25:26 | 0:25:29 | |
I can't believe what Wim is doing. | 0:25:30 | 0:25:32 | |
He's rewriting all the text books. It's truly amazing. | 0:25:32 | 0:25:36 | |
Wim is looking entirely comfortable, | 0:25:38 | 0:25:40 | |
as if he was swimming in his local swimming pool. | 0:25:40 | 0:25:42 | |
How are you feeling, Wim? | 0:25:44 | 0:25:45 | |
OK. In control. It's beautiful! | 0:25:45 | 0:25:49 | |
He's not really displaying any signs of being incredibly cold. | 0:25:49 | 0:25:54 | |
This is just remarkable. We've got an iceberg right behind Wim. | 0:25:54 | 0:25:57 | |
Wim, how are you feeling? | 0:25:58 | 0:26:01 | |
-I feel great. -You feel great? -Yeah. | 0:26:01 | 0:26:03 | |
Boys, you're now halfway. five minutes in. | 0:26:03 | 0:26:07 | |
You're feeling absolutely fine? | 0:26:07 | 0:26:09 | |
-I'm totally OK. -You genuinely feel OK? | 0:26:09 | 0:26:11 | |
Yeah, really. | 0:26:11 | 0:26:12 | |
In this freezing cold water, | 0:26:12 | 0:26:14 | |
I would expect to be pulling him out because his heart had | 0:26:14 | 0:26:17 | |
gone into such funny rhythms that we were at risk of him dying. | 0:26:17 | 0:26:20 | |
When you know how to deal with the cold, | 0:26:20 | 0:26:23 | |
the cold will make you stronger. That's it. | 0:26:23 | 0:26:26 | |
Boys, can you start coming back towards me? | 0:26:26 | 0:26:28 | |
We're eight minutes in now. | 0:26:28 | 0:26:30 | |
I can still feel how cold the water is, | 0:26:30 | 0:26:32 | |
-even when it comes into the wet suit. -OK. | 0:26:32 | 0:26:34 | |
-It's quite amazing. -Cold is a force. | 0:26:34 | 0:26:36 | |
There's no possibility that he should still be swimming, chatting. | 0:26:36 | 0:26:40 | |
It's remarkable. | 0:26:40 | 0:26:42 | |
After ten minutes, Wim Hof has achieved the impossible. | 0:26:42 | 0:26:46 | |
He's survived a swim in a freezing glacial lake | 0:26:46 | 0:26:49 | |
that should be fatal to any normal human being. | 0:26:49 | 0:26:51 | |
Look at this. | 0:26:52 | 0:26:54 | |
You've got goosebumps though. You do have goosebumps! | 0:26:54 | 0:26:57 | |
Oh, no. You don't have goosebumps. | 0:26:57 | 0:26:59 | |
That was extraordinary. | 0:27:02 | 0:27:04 | |
Well done. | 0:27:04 | 0:27:06 | |
INDISTINCT CHAT | 0:27:06 | 0:27:08 | |
OK, you've seen it here. | 0:27:08 | 0:27:10 | |
We've been out in a glacial lagoon in just above freezing temperature. | 0:27:10 | 0:27:15 | |
I've had to put on this unbelievable wet suit | 0:27:15 | 0:27:17 | |
to try and get out there with Wim. | 0:27:17 | 0:27:19 | |
Wim has been out just in his swimming trunks and he shows no visible | 0:27:19 | 0:27:23 | |
signs of cold, no visible signs of any medical problem at all. | 0:27:23 | 0:27:27 | |
This is absolutely extraordinary. | 0:27:27 | 0:27:29 | |
I came to Iceland to find a superhero. | 0:27:29 | 0:27:33 | |
A real life Iceman, a man who doesn't feel the cold. | 0:27:33 | 0:27:37 | |
I found one. Wim Hof, you are superhuman! | 0:27:37 | 0:27:42 | |
Subtitles by Red Bee Media Ltd | 0:27:56 | 0:27:59 |