0:00:23 > 0:00:24He's Dr Chris.
0:00:25 > 0:00:27He's Dr Xand.
0:00:27 > 0:00:29And, yes, we're twins.
0:00:30 > 0:00:33Do you know how brilliant your body really is?
0:00:33 > 0:00:34I'm getting better.
0:00:34 > 0:00:36Well, we're going to show you.
0:00:36 > 0:00:38Oh, there you go.
0:00:38 > 0:00:41In this series, we're pushing our bodies to their limits...
0:00:41 > 0:00:43This is my sick.
0:00:43 > 0:00:45..by doing extraordinary experiments on each other...
0:00:45 > 0:00:47- You look really funny. - You look funny.
0:00:47 > 0:00:50..to uncover what goes on inside...
0:00:50 > 0:00:52Ooh! That just came out of my ear.
0:00:52 > 0:00:53..and out.
0:00:53 > 0:00:55Wow, that's amazing.
0:00:55 > 0:00:56From the bizarre...
0:00:56 > 0:00:58Can we get a sample of your snot?
0:00:59 > 0:01:01..to the incredible.
0:01:01 > 0:01:03It's time to find out what you're made of.
0:01:03 > 0:01:05Hello?
0:01:05 > 0:01:07Coming up...
0:01:07 > 0:01:08..on Operation Ouch!
0:01:11 > 0:01:14This man reveals a terrifying secret.
0:01:14 > 0:01:15That's amazing.
0:01:15 > 0:01:18I discover what happens when you lose your senses.
0:01:18 > 0:01:21So now I am seeing things and hearing things.
0:01:21 > 0:01:26And we reveal an amazing trick your body does every time you swallow.
0:01:26 > 0:01:28All right down there?
0:01:30 > 0:01:33Nearly half a million people come into Accident and Emergency
0:01:33 > 0:01:35every year with a sporting injury.
0:01:35 > 0:01:36Here's another one.
0:01:38 > 0:01:40Eight-year-old Mason is in Accident and Emergency
0:01:40 > 0:01:43with his mum, big sis and dad.
0:01:43 > 0:01:45He's not too happy though.
0:01:45 > 0:01:47Because he's got a dish cloth on his leg?
0:01:47 > 0:01:49No, Xand. Because...
0:01:49 > 0:01:52I hurt my ankle.
0:01:52 > 0:01:53Let's see it, then.
0:01:57 > 0:01:59My ankle's like a balloon.
0:01:59 > 0:02:02- And Mason can't bear to look. - How did it happen?
0:02:02 > 0:02:03Check it out.
0:02:04 > 0:02:08Mason was trampolining and jumping as high as he could.
0:02:08 > 0:02:13- Higher and higher and higher. - Is that outer space?
0:02:13 > 0:02:15It gets worse.
0:02:15 > 0:02:17His cousin was on the same trampoline,
0:02:17 > 0:02:20going as high as he could, so guess what happened next?
0:02:21 > 0:02:24They left Earth orbit and flew to Mars?
0:02:24 > 0:02:27Outer space looks a lot of fun.
0:02:27 > 0:02:29Ooh, hang on a minute, this doesn't look good.
0:02:29 > 0:02:31You're right, Xand. Here's what really happened.
0:02:31 > 0:02:34They smashed into each other, toppled down...
0:02:34 > 0:02:35and Mason twisted his ankle.
0:02:35 > 0:02:37Ouch!
0:02:38 > 0:02:41He is just a typical boy, isn't he?
0:02:41 > 0:02:42Good as gold.
0:02:42 > 0:02:45I'd be amazed if it's not broke.
0:02:45 > 0:02:46Here's the very man to tell you...
0:02:49 > 0:02:52Take a peek, Mason, you're in safe hands.
0:02:52 > 0:02:55Dr Beaves checks the sensations in Mason's foot
0:02:55 > 0:02:59as sometimes, with a bad break or bad sprain, swelling can compress
0:02:59 > 0:03:00the blood supply and nerves.
0:03:00 > 0:03:02But he's happy that they're all OK.
0:03:02 > 0:03:03We're going to get an X-ray,
0:03:03 > 0:03:06just to make sure there isn't any bony damage underneath.
0:03:06 > 0:03:08Personally, I think this is a sprain at the moment,
0:03:08 > 0:03:10but the X-ray will tell us a bit more information.
0:03:10 > 0:03:14So I'll get that sorted. We'll know what we're dealing with.
0:03:14 > 0:03:16So it's X-ray time for Mason.
0:03:16 > 0:03:20Although the doc thinks it's a sprain, you never can tell.
0:03:20 > 0:03:22That's a pretty good picture, Mason. Well done.
0:03:22 > 0:03:25Dr Beaves is checking the bones in Mason's foot.
0:03:25 > 0:03:28There's just a small fragment of bone, if you like.
0:03:28 > 0:03:30It isn't conclusive, but because of the symptoms
0:03:30 > 0:03:31on the side of his ankle,
0:03:31 > 0:03:34we're going to treat it like it's a clinical fracture.
0:03:34 > 0:03:37So the doc is treating it like a break.
0:03:37 > 0:03:39I hope you like the crutches, Mason.
0:03:39 > 0:03:43I'm kind of hoping I get crutches, so I'll be popular at school.
0:03:43 > 0:03:44What's he like?!
0:03:44 > 0:03:47We'll get you back for a fracture clinic in the next day or so.
0:03:47 > 0:03:50- Never mind that. - Yeah, what about the crutches?
0:03:50 > 0:03:52Does he keep his weight off it?
0:03:52 > 0:03:54Yeah, we'll give him some crutches as well.
0:03:54 > 0:03:55See how he gets on with them.
0:03:55 > 0:03:56Result! But wait...
0:03:56 > 0:03:59There's no guarantee you get to take the crutches,
0:03:59 > 0:04:01cos if you can't handle the crutches...
0:04:01 > 0:04:04- MASON'S MUM: Oh, he can. - Yeah. I've been practising...
0:04:04 > 0:04:06- OK. OK, good. - ..for when this day comes.
0:04:06 > 0:04:08Ex-squeeze me? Practising? That's keen.
0:04:08 > 0:04:11But at eight, Mason's a bit young for crutches, and even though
0:04:11 > 0:04:14he could do with them, first, he has to prove he can use them.
0:04:14 > 0:04:16Got what I wanted. Crutches.
0:04:16 > 0:04:17Not yet, you haven't.
0:04:17 > 0:04:19We don't really see them again
0:04:19 > 0:04:21once we give them to the kids, unfortunately.
0:04:21 > 0:04:24But... But, yeah, they seem to find them exciting.
0:04:24 > 0:04:27I'll be the second one in my school to have crutches.
0:04:27 > 0:04:29First one in my class.
0:04:29 > 0:04:30And what's so good about that?
0:04:30 > 0:04:31Girls.
0:04:31 > 0:04:33You'll have girls?
0:04:33 > 0:04:34I'll have all the girls going,
0:04:34 > 0:04:36"Oh, you all right? You all right? You all right?"
0:04:36 > 0:04:38I'll be like, "Yeah."
0:04:38 > 0:04:40Playing it cool, Mason?
0:04:40 > 0:04:41BOTH: Nice!
0:04:41 > 0:04:43But first, Mason has to take his test.
0:04:43 > 0:04:46They're not taking my crutches away.
0:04:46 > 0:04:48Join us later to see if he passes the test.
0:04:53 > 0:04:55And now to our lab...
0:04:55 > 0:04:56Wow!
0:04:56 > 0:04:58..where we do incredible experiments...
0:04:58 > 0:04:59Oh, it's disgusting!
0:04:59 > 0:05:01..to show you how your body works.
0:05:01 > 0:05:03Watch this!
0:05:03 > 0:05:06Just don't try anything you see here at home.
0:05:06 > 0:05:09BOTH: Aaah!
0:05:09 > 0:05:12Your mouth and throat are awesome and we're going to show you
0:05:12 > 0:05:16one of the cleverest tricks your body does every time you eat.
0:05:16 > 0:05:18Swallowing.
0:05:18 > 0:05:20And if you're thinking, "What's the big deal with swallowing?"
0:05:20 > 0:05:23Well, here's the thing.
0:05:23 > 0:05:27Your lungs and stomach actually share part of the same tube.
0:05:27 > 0:05:31Your mouth and throat go into one tube that then splits, so that
0:05:31 > 0:05:33you can eat and breathe through the same hole.
0:05:35 > 0:05:36Now, you might be thinking,
0:05:36 > 0:05:39because everything goes in through the throat, this could get
0:05:39 > 0:05:42pretty disastrous, with all your food ending up in your lungs.
0:05:42 > 0:05:44- Right?- Wrong.
0:05:44 > 0:05:45- He's right.- Never fear.
0:05:45 > 0:05:49You actually have a super-duper clever bit of body kit
0:05:49 > 0:05:50that stops this happening.
0:05:50 > 0:05:52It's called the epiglottis.
0:05:52 > 0:05:54And to show you how it works,
0:05:54 > 0:05:58I'm going to put a camera up Chris's nose and down into his throat.
0:06:01 > 0:06:05This is a trans-nasal oesophagoscopic camera.
0:06:05 > 0:06:07That's a bit of a mouthful.
0:06:07 > 0:06:10But what it means is it can go up through your nose and down into
0:06:10 > 0:06:14your oesophagus, which is the tube that carries food to your tummy.
0:06:14 > 0:06:18Now, even if you do have a trans-nasal oesophagoscopic camera
0:06:18 > 0:06:19lying around at home,
0:06:19 > 0:06:21you still shouldn't try this yourself.
0:06:21 > 0:06:24We are responsible doctors and only people like us
0:06:24 > 0:06:27can use trans-nasal oesophagoscopic cameras.
0:06:27 > 0:06:29- You like saying that, don't you?- Yes.
0:06:29 > 0:06:31OK, are you ready?
0:06:35 > 0:06:38OK, so we've just gone in to Chris's nose.
0:06:38 > 0:06:41You can see a few hairs there, a few bogies.
0:06:41 > 0:06:43You might want to save those for tea later.
0:06:43 > 0:06:46I can actually see the camera at the back of Chris's throat.
0:06:46 > 0:06:48It's like a cave in there.
0:06:48 > 0:06:51This here is actually the dangly bit at the back of your throat.
0:06:51 > 0:06:53It's called the uvula.
0:06:53 > 0:06:55Now we're going further in.
0:06:55 > 0:06:57So this, here, that's his tongue.
0:06:57 > 0:07:00And just behind that is a pink flap, the epiglottis,
0:07:00 > 0:07:02that folds over when we swallow.
0:07:02 > 0:07:05Hello, Chris's epiglottis. You all right down there?
0:07:05 > 0:07:07Still doing a good job?
0:07:07 > 0:07:10Now, at the moment, it's open, cos he's breathing.
0:07:10 > 0:07:12It's letting air into his lungs.
0:07:12 > 0:07:14But the minute he swallows, it'll really quickly close
0:07:14 > 0:07:17to prevent any food or liquid going into his lungs
0:07:17 > 0:07:19and divert it all down into his tummy.
0:07:19 > 0:07:22You'll be able to see it much better if he has some soup.
0:07:22 > 0:07:23- Ready for some soup, Chris?- Yeah.
0:07:27 > 0:07:29- Here we go.- Wait, wait. Is this carrot and coriander?
0:07:29 > 0:07:32- Yes. Your favourite. - You know I hate that.
0:07:32 > 0:07:35What? Here we go. Yum, yum, yum.
0:07:35 > 0:07:38So you can actually see the spoon with the soup in it
0:07:38 > 0:07:39going into his mouth.
0:07:39 > 0:07:41We're putting the soup in, and now
0:07:41 > 0:07:43watch the epiglottis when he swallows.
0:07:43 > 0:07:45There, it moves really quickly, closes off his lungs completely,
0:07:45 > 0:07:49so that all the soup goes down into his tummy.
0:07:50 > 0:07:51Let's see that again.
0:07:51 > 0:07:53There's the wind pipe.
0:07:53 > 0:07:54Here comes the soup.
0:07:54 > 0:07:56There, the epiglottis closes -
0:07:56 > 0:07:58the soup goes down - yum.
0:07:58 > 0:08:01The epiglottis opens. Job done!
0:08:01 > 0:08:04You actually swallow about 600 times a day.
0:08:04 > 0:08:07Sometimes, when you're eating and sometimes,
0:08:07 > 0:08:09when you're just swallowing your own saliva.
0:08:09 > 0:08:11So we've shown you how your epiglottis stops you getting
0:08:11 > 0:08:13lungs full of food and spit.
0:08:13 > 0:08:15But what if you were upside down?
0:08:15 > 0:08:18Well, there's another body part that stops your food going up
0:08:18 > 0:08:21- when you're upside down. - You mean down.- No, up.
0:08:23 > 0:08:26From the tip of your tongue to the end of your bum, you've got a long
0:08:26 > 0:08:30tube lined with smooth muscle that squeezes food through your body.
0:08:30 > 0:08:32A bit like squeezing toothpaste out of a tube.
0:08:32 > 0:08:36It even works when you're upside down, and we're going to prove it.
0:08:38 > 0:08:41Xandy won't mind being upside down as long as I feed him.
0:08:41 > 0:08:43OK, Xand, here's some soup.
0:08:43 > 0:08:46Ooh, lovely... Mmm.
0:08:46 > 0:08:48Carrot and coriander? My favourite.
0:08:48 > 0:08:51Now, it's not a good idea to always eat soup like this.
0:08:51 > 0:08:54Imagine what restaurants would look like if we did.
0:08:54 > 0:08:58And what's happening now is that the smooth muscle in my oesophagus
0:08:58 > 0:09:00is pushing the soup up towards my stomach.
0:09:00 > 0:09:02This is called peristalsis.
0:09:02 > 0:09:04Waves of muscle contraction,
0:09:04 > 0:09:09all the way through my gut push food through my digestive system.
0:09:09 > 0:09:11So swallowing works even when you're upside down.
0:09:11 > 0:09:13But let's face it, it's not a good idea.
0:09:13 > 0:09:16You're going to end up with soup in your hair.
0:09:19 > 0:09:22Chris? Chris? Chris?
0:09:25 > 0:09:30The bathroom. A place where you can store your toiletries.
0:09:30 > 0:09:33- Is this your ducky?- Mmm.
0:09:33 > 0:09:36A place where you can have a bath.
0:09:36 > 0:09:38Or brush your teeth.
0:09:38 > 0:09:40But the bathroom can also be a place of danger.
0:09:42 > 0:09:44- Can't it, Xand?- Mm-mm.
0:09:44 > 0:09:48For example, the water from the hot tap could be...scalding hot.
0:09:48 > 0:09:54- Oh.- Or...you could drop your mobile down the toilet.
0:09:54 > 0:09:55Oh!
0:09:55 > 0:09:58Or you could run out of toilet paper.
0:09:58 > 0:10:00HE GROANS
0:10:00 > 0:10:02But apart from that,
0:10:02 > 0:10:05there's absolutely nothing to worry about, is there, Xand?
0:10:05 > 0:10:07- Uh-uh.- Oh, look, a spider.
0:10:08 > 0:10:14- Oh!- Ow! Oh... Ah... Ooh.
0:10:14 > 0:10:16Oops. A minor injury.
0:10:19 > 0:10:23So what should you do if you get a nose bleed?
0:10:23 > 0:10:24Do you...
0:10:41 > 0:10:43The answer is B.
0:10:44 > 0:10:46If you have a bleeding nose,
0:10:46 > 0:10:51the best thing to do is sit quietly, lean forward and pinch the soft bit
0:10:51 > 0:10:54of your nose for ten minutes, while you breathe through your mouth.
0:10:54 > 0:10:58- And remember, it always looks worse than it actually is.- Hey!
0:11:02 > 0:11:03All done! It's all stopped,
0:11:03 > 0:11:06and I've even removed the spider...
0:11:06 > 0:11:07and put it in Xand's bed.
0:11:12 > 0:11:15So remember, if you get a nose bleed, lean forward and pinch
0:11:15 > 0:11:17your nose for ten minutes.
0:11:17 > 0:11:19But if you're worried, tell an adult.
0:11:24 > 0:11:28We've got some incredible body tricks for you to show your friends.
0:11:28 > 0:11:31Here's a good one to wind your mates up with.
0:11:31 > 0:11:35- Who wants to learn a trick? - ALL:- Me!
0:11:35 > 0:11:37- Yeah! Me!- OK, I'm going to show Xand
0:11:37 > 0:11:39and I want you guys to watch and then you'll do it.
0:11:39 > 0:11:42We'll get Xand's arm, as if you're cheering a football team, OK?
0:11:42 > 0:11:45- Really, really get your hands revving up like this.- Yeah!
0:11:45 > 0:11:48So quick as you can. Really do your hand hard.
0:11:48 > 0:11:50Hard as you can, so your arm starts to really ache.
0:11:50 > 0:11:53When I say, you're going to put your hand together like that
0:11:53 > 0:11:55and put your fingers apart, OK, ready? Three...
0:11:55 > 0:11:58- BOY:- I know that one. - ..two, one, go.
0:11:58 > 0:12:01'I'm trying to stop my fingers touching, but I can't.'
0:12:01 > 0:12:03- That's really weird. - And what happens?
0:12:03 > 0:12:05My... This finger's moving towards that one.
0:12:05 > 0:12:08Does it work for everybody? Let's have a go.
0:12:10 > 0:12:13The most important thing is to really wind your arm up
0:12:13 > 0:12:17as hard as you can, then put your hands together, fingers apart,
0:12:17 > 0:12:18and watch what happens.
0:12:18 > 0:12:21One finger should start curling toward the other.
0:12:21 > 0:12:22What do these guys think?
0:12:22 > 0:12:23It worked.
0:12:23 > 0:12:26Well, everyone seems to know how to make it work,
0:12:26 > 0:12:28but does anyone know why it works?
0:12:28 > 0:12:33When your hand is in a fist, it gets used to being in the fist
0:12:33 > 0:12:36so when you do your fingers like that, it will curl back in
0:12:36 > 0:12:38because it's used to being like that.
0:12:38 > 0:12:40Simeon's bang-on!
0:12:40 > 0:12:44Because you're winding your arm, you have to clench your fist
0:12:44 > 0:12:47really tight and the muscles to those fingers get used to
0:12:47 > 0:12:51contracting, so when you stop and put your hands together,
0:12:51 > 0:12:52that finger wants to keep on squeezing.
0:12:52 > 0:12:55So you've got to make a tight fist for it to work.
0:12:55 > 0:12:58If you let your wrist go all loose, your fingers will fly off!
0:13:03 > 0:13:07Earlier, Mason came to Accident and Emergency after injuring his ankle.
0:13:07 > 0:13:08Let's catch up with him.
0:13:11 > 0:13:13Back in Sheffield,
0:13:13 > 0:13:16eight-year-old Mason is in with a badly swollen ankle.
0:13:16 > 0:13:19Mason was trampolining and jumping as high as he could,
0:13:19 > 0:13:21but his cousin was on the same trampoline.
0:13:21 > 0:13:24They smashed into each other, toppled down,
0:13:24 > 0:13:26and Mason twisted his ankle. Ouch!
0:13:26 > 0:13:32Dr Beaves has X-rayed Mason's foot and has seen a small fracture.
0:13:32 > 0:13:35Mason's going to need to have a plaster cast on for a few weeks,
0:13:35 > 0:13:37so why is he so happy?
0:13:37 > 0:13:39Got what I wanted. Crutches.
0:13:39 > 0:13:42But before he can get them, he needs to prove he can use them.
0:13:42 > 0:13:46First, he needs to get his plaster cast on.
0:13:46 > 0:13:48I'm never going on a trampoline ever again.
0:13:48 > 0:13:52Really, Mason? Can't imagine why(!)
0:13:52 > 0:13:53Ooh, that's nice.
0:13:53 > 0:13:56Ooh, I think he's enjoying this, Chris.
0:13:56 > 0:13:58Oh, I can feel it setting already.
0:13:58 > 0:13:59All done.
0:13:59 > 0:14:03Mason's quite young for crutches, hence the test.
0:14:03 > 0:14:05Getting my crutches now?
0:14:05 > 0:14:08Yeah, but it all depends on if you can work them.
0:14:08 > 0:14:11She says you're a bit little, but because you're so tall,
0:14:11 > 0:14:12they're going to try it.
0:14:15 > 0:14:17They're my crutches.
0:14:17 > 0:14:19The moment of truth has arrived.
0:14:19 > 0:14:21It certainly has, Xand.
0:14:21 > 0:14:22Wahey!
0:14:23 > 0:14:25Mason needs to show the nurse
0:14:25 > 0:14:29that he can get about on the crutches without falling over.
0:14:29 > 0:14:30Let's do it.
0:14:33 > 0:14:34He's styling it!
0:14:35 > 0:14:37- Success! - Yeah!
0:14:39 > 0:14:42So, armed with his new crutches, Mason speeds off,
0:14:42 > 0:14:44ready to impress the girls.
0:14:44 > 0:14:46Was there ever any doubt in your mind?
0:14:46 > 0:14:48Little wobble, but nowt major.
0:14:48 > 0:14:50And what has he learned?
0:14:50 > 0:14:55Don't never try and do as high as you can on a trampoline,
0:14:55 > 0:14:57cos that's what happens.
0:14:57 > 0:14:59Careful, Mason.
0:14:59 > 0:15:02- Bit stumbly, but off we go. - BOTH: Bye!
0:15:04 > 0:15:06Still to come...
0:15:06 > 0:15:08We learn how a bash turns into a bruise.
0:15:09 > 0:15:13Why this girl's ear lobes split in two...
0:15:13 > 0:15:16And I face a sensory deprivation challenge.
0:15:16 > 0:15:19It's all very strange.
0:15:19 > 0:15:23But first, did you know you use 12 muscles to smile,
0:15:23 > 0:15:2572 muscles to speak,
0:15:25 > 0:15:29and a whopping 300 muscles just to stand still?
0:15:29 > 0:15:31That's amazing!
0:15:31 > 0:15:32So is this.
0:15:34 > 0:15:39This might look like a typical man wandering along a typical street,
0:15:39 > 0:15:42but don't be fooled. In fact, he's a 13-time world champion,
0:15:42 > 0:15:44famous for his extraordinary face.
0:15:47 > 0:15:51OK, nice moustache, but what's he doing to impress this bunch?
0:15:51 > 0:15:53That's amazing. Truly amazing!
0:15:55 > 0:15:58Wondering what's causing all the commotion?
0:15:58 > 0:16:02- Well, take a look at this. - Argh! He's an alien.
0:16:02 > 0:16:06No, Xand, this is Tommy Mattinson and he's the World Gurning Champion,
0:16:06 > 0:16:10which means he can contort his face into the most amazing expressions.
0:16:10 > 0:16:12Gurning's based on transformation,
0:16:12 > 0:16:14so it's basically how you look
0:16:14 > 0:16:15and to what you turn into.
0:16:15 > 0:16:17It's impressive. He's an ugly man though.
0:16:17 > 0:16:19I've never seen a face like that before.
0:16:19 > 0:16:21Like, that was just incredible.
0:16:21 > 0:16:25But how does Tommy's unusual face do this?
0:16:25 > 0:16:28Behind the skin, there's around 40 facial muscles.
0:16:28 > 0:16:30By stretching and contracting them,
0:16:30 > 0:16:34it's possible to make more than 4,000 different expressions.
0:16:34 > 0:16:38Over years of practice, Tommy has built up his muscles so much
0:16:38 > 0:16:41that he can move his facial features much further than most people,
0:16:41 > 0:16:44creating some truly incredible expressions.
0:16:44 > 0:16:48And Tommy can turn himself into a werewolf!
0:16:48 > 0:16:49HOWLING
0:16:49 > 0:16:52Because they're quite scary, people are, you know,
0:16:52 > 0:16:53can be taken aback with that,
0:16:53 > 0:16:55which the Queen was when she saw that face.
0:16:55 > 0:16:58Her Majesty the Queen was taken aback?
0:16:58 > 0:17:00- DR CHRIS MIMICS THE QUEEN: - Now, that's amazing!
0:17:08 > 0:17:10What are you doing?
0:17:12 > 0:17:14- What are you doing?!- Oh!
0:17:14 > 0:17:17I'm trying to block out the rest of the world.
0:17:17 > 0:17:20- There's a much better way of doing that!- Really?
0:17:20 > 0:17:22Time for Investigation Ouch!
0:17:25 > 0:17:28We all have senses. They tell you what's going on around you
0:17:28 > 0:17:30and then your body knows what to do.
0:17:30 > 0:17:31Like...
0:17:31 > 0:17:34telling your feet to dodge people in the street,
0:17:34 > 0:17:38looking both ways before crossing the road.
0:17:38 > 0:17:41It's all about your brain receiving data and deciphering it
0:17:41 > 0:17:44to help you function in our busy world.
0:17:44 > 0:17:46Even the smell of that bread is making me hungry.
0:17:48 > 0:17:50Your brain is like a super computer,
0:17:50 > 0:17:53receiving around 2,000 bits of information a second
0:17:53 > 0:17:56and processing it all without you even noticing.
0:17:56 > 0:18:00But what if we were to completely shut off all the data
0:18:00 > 0:18:01that your brain receives?
0:18:03 > 0:18:06Just like pulling the plug on that computer.
0:18:06 > 0:18:08Well, I'm about to do that to my brain right now
0:18:08 > 0:18:10and I'm a little bit scared!
0:18:11 > 0:18:15I'll be doing it in here. This is an anechoic chamber.
0:18:15 > 0:18:18Normally, it's used to test sound equipment, but scientists
0:18:18 > 0:18:22often use these chambers when studying sensory deprivation.
0:18:22 > 0:18:25It's designed to deaden any noise,
0:18:25 > 0:18:27so there's absolutely no sound inside at all.
0:18:27 > 0:18:30This is totally alien for a human being.
0:18:30 > 0:18:32I'll have to be careful.
0:18:32 > 0:18:36This foam all around me absorbs all the echoes.
0:18:36 > 0:18:39Now, you might not have noticed this, but you hear echoes all the time.
0:18:39 > 0:18:41They allow you to tell whether you're in a sports hall
0:18:41 > 0:18:44or whether you're in your bedroom, even with your eyes closed.
0:18:44 > 0:18:47But in here, it's completely different.
0:18:47 > 0:18:49This room will prevent any
0:18:49 > 0:18:51outside sound from reaching my ears.
0:18:51 > 0:18:54So when that door closes, it's silence.
0:18:57 > 0:19:00And soon, I'll be finding out what that's like.
0:19:00 > 0:19:02But worse still, the lights are going to go out too.
0:19:02 > 0:19:05I'll be practically senseless!
0:19:05 > 0:19:08How will I cope? Let's speak to an expert.
0:19:09 > 0:19:12This is Dr Oliver Mason.
0:19:12 > 0:19:14He's a psychologist at University College London
0:19:14 > 0:19:18and has done lots of studies on what happens to the brain
0:19:18 > 0:19:20inside anechoic chambers.
0:19:20 > 0:19:22So what do you think's going to happen to me in there?
0:19:22 > 0:19:24Your sense of hearing may become more sensitive.
0:19:24 > 0:19:27In fact, all your senses may alter. You may even hear things that,
0:19:27 > 0:19:30- strictly, aren't there. - You mean even if there's no sound,
0:19:30 > 0:19:31I might still hear things?
0:19:31 > 0:19:35That's right. Because our mind may create something for us
0:19:35 > 0:19:38to experience because there's nothing actually happening.
0:19:40 > 0:19:43In fact, it can be so disturbing for the mind
0:19:43 > 0:19:45that some people totally freak out.
0:19:45 > 0:19:47So we've taken some special precautions.
0:19:47 > 0:19:50Oliver and James are going to be monitoring me while I'm in there.
0:19:50 > 0:19:52They've given me a safe word, which is "ouch",
0:19:52 > 0:19:55and I can say that at any time and they'll let me out.
0:19:55 > 0:19:59Now, I've got this camera with me, so you're coming too. Let's go.
0:19:59 > 0:20:02Some people manage up to half an hour in this alien environment.
0:20:02 > 0:20:05Some just a few minutes, before they shout their escape word.
0:20:05 > 0:20:07Let's see how long I last.
0:20:07 > 0:20:10I'm now watching it close. It's actually pretty scary.
0:20:13 > 0:20:15Everything is now very quiet.
0:20:17 > 0:20:19It's hard to imagine there's anything
0:20:19 > 0:20:20outside this room now.
0:20:20 > 0:20:22I can't hear any other noises.
0:20:22 > 0:20:25So the first thing that is really strange about this is...
0:20:25 > 0:20:28it feels like my brain almost can't stay still,
0:20:28 > 0:20:32so I'm listening very, very hard for noises.
0:20:32 > 0:20:33I really want to hear things.
0:20:33 > 0:20:37So I can hear something like...
0:20:37 > 0:20:39birds chirping.
0:20:39 > 0:20:41Or like a waterfall, maybe.
0:20:41 > 0:20:43Like a high-pitched kind of chattering sound.
0:20:43 > 0:20:48That's because my brain is trying to make sense of this place.
0:20:48 > 0:20:50It thinks there must be sound, so it hears it.
0:20:50 > 0:20:52But there's nothing here.
0:20:53 > 0:20:58Starved of sensory data, I'm developing Spidey Senses.
0:20:58 > 0:21:02I can hear my heart beating in my ears.
0:21:02 > 0:21:05I can still hear my voice, but it's not my normal voice.
0:21:05 > 0:21:06What happens if I shout?
0:21:06 > 0:21:08Hello! Nothing.
0:21:08 > 0:21:10It's really, really weird.
0:21:10 > 0:21:15So it's like I'm shouting into a huge valley and nothing comes back.
0:21:15 > 0:21:17Everything I say disappears immediately.
0:21:18 > 0:21:20Now, most of the information
0:21:20 > 0:21:23the brain receives is through sight,
0:21:23 > 0:21:25so what would happen if I had none?
0:21:25 > 0:21:27It's something I'm about to find out.
0:21:32 > 0:21:35So he's probably even more disoriented now.
0:21:35 > 0:21:38He not only can't hear anything, he can't see anything either.
0:21:42 > 0:21:44I can hear my stomach gurgling.
0:21:44 > 0:21:49I can see little flashes of light at the corners of my eyes.
0:21:49 > 0:21:51I can hear these other noises in my ears.
0:21:51 > 0:21:52It's all very strange.
0:21:55 > 0:21:58So now I'm seeing things and hearing things.
0:21:58 > 0:22:02Deprived of its normal data, my brain is reaching out
0:22:02 > 0:22:06to make sense of this alien scenario, but without its main stimuli,
0:22:06 > 0:22:08it's confused and I'm becoming disoriented.
0:22:10 > 0:22:12I don't know how big this room is any more,
0:22:12 > 0:22:14but I feel like I'm in
0:22:14 > 0:22:15a very big forest
0:22:15 > 0:22:17that just goes on forever.
0:22:18 > 0:22:20I really don't like it in here.
0:22:20 > 0:22:22I really would like that door to be opened.
0:22:25 > 0:22:26Ouch.
0:22:26 > 0:22:27'Did they hear me?'
0:22:27 > 0:22:30Hope that'll make the door open.
0:22:30 > 0:22:31'Are they still there?'
0:22:34 > 0:22:36That is a welcome sight.
0:22:36 > 0:22:37I feel like a bit of a baby now.
0:22:37 > 0:22:38I wasn't really scared.
0:22:38 > 0:22:40Wasn't scared, actually.
0:22:40 > 0:22:43Half an hour in there felt like a lifetime.
0:22:43 > 0:22:45It is very bright out here. And the other thing is, it's really loud.
0:22:45 > 0:22:49I can hear my... I can hear lots of other sounds, but I can mainly hear
0:22:49 > 0:22:51my voice very loudly, like it's echoing off everything.
0:22:51 > 0:22:55Um, yeah, I am very pleased to be out.
0:22:55 > 0:22:57So I quite enjoyed the 15 minutes in the light,
0:22:57 > 0:23:00but when the lights went out, it was like a nightmare.
0:23:00 > 0:23:02Nightmare is a really good point of comparison,
0:23:02 > 0:23:04because your brain's probably in
0:23:04 > 0:23:05something of a similar state in there.
0:23:05 > 0:23:09It's got nothing to go on and everything comes from the brain.
0:23:09 > 0:23:13That's right. We've shown the brain needs sensory data to function.
0:23:13 > 0:23:16It just shows how much information my brain's getting every single
0:23:16 > 0:23:19minute of the day and processing without me even knowing it.
0:23:19 > 0:23:24So when you take those things away, things get very weird indeed.
0:23:24 > 0:23:26Of course, I'm not really afraid of the dark.
0:23:31 > 0:23:34When you get injured, your body is brilliant at mending itself.
0:23:34 > 0:23:39This next boy should know - he's always having accidents.
0:23:39 > 0:23:41# If there's a bone to break, he'll break it
0:23:41 > 0:23:43# If there's a knee to graze, he'll graze it
0:23:43 > 0:23:47# If there's an ankle to sprain, he'll sprain it
0:23:47 > 0:23:48# He's the Unluckiest Kid! #
0:23:52 > 0:23:53If your body takes a knock,
0:23:53 > 0:23:57it won't be long before you get a whacking great bruise.
0:23:57 > 0:24:00A bruise is when your little blood vessels break,
0:24:00 > 0:24:03causing the red blood cells to gush out.
0:24:04 > 0:24:07Whoa, that looks like the best waterslide ever!
0:24:07 > 0:24:10Your red blood cells have nowhere to go, so they fill up in-between
0:24:10 > 0:24:12your normal skin cells.
0:24:12 > 0:24:16But the area becomes so cramped, the oxygen's cut off,
0:24:16 > 0:24:18turning the red blood cells blue.
0:24:18 > 0:24:20You look a bit off colour.
0:24:20 > 0:24:22Tell me about it! I can hardly breathe.
0:24:22 > 0:24:25Then your body breaks down the leaked blood cells.
0:24:25 > 0:24:28Your bruise then turns greeny yellow because the blood cells
0:24:28 > 0:24:31have been turned into bile and bilirubin,
0:24:31 > 0:24:33the same stuff that makes your poo brown.
0:24:35 > 0:24:38Finally, it's slowly absorbed back into the body and your skin
0:24:38 > 0:24:40goes back to normal.
0:24:40 > 0:24:42Oh, dear!
0:24:45 > 0:24:49Each year, around half a million people come to Accident and Emergency
0:24:49 > 0:24:50with a sporting injury.
0:24:50 > 0:24:52Here's another one. Well, sort of.
0:24:54 > 0:24:56In Sheffield, 11-year-old Chloe
0:24:56 > 0:24:59is in Accident and Emergency with her gran and mum...
0:24:59 > 0:25:02oh, and a freaky-looking ear lobe.
0:25:02 > 0:25:06Well, my ear just ripped unexpectedly at an ice hockey match.
0:25:06 > 0:25:09What?! That IS unexpected.
0:25:09 > 0:25:12- So is it sore? - No, it just feels normal.
0:25:12 > 0:25:16Ears don't just split on their own, so how did this happen?
0:25:18 > 0:25:21Chloe was at an ice hockey match with her granddad.
0:25:21 > 0:25:23Ooh, nice shoulder pads, Chloe.
0:25:23 > 0:25:25Ooh, I'd love a hot dog.
0:25:25 > 0:25:28Her favourite team, the Sheffield Steelers, were playing
0:25:28 > 0:25:30and the stadium was packed.
0:25:30 > 0:25:33With the game in full swing and the goals flying in,
0:25:33 > 0:25:36Chloe was getting more and more excited.
0:25:38 > 0:25:40Everyone was excited.
0:25:40 > 0:25:43To top it off, her favourite player scored, slamming the puck
0:25:43 > 0:25:45into the back of the net.
0:25:48 > 0:25:51Chloe jumped up and threw her arms in the air.
0:25:51 > 0:25:53Her sleeve got caught in her earring
0:25:53 > 0:25:55and ripped her ear lobe in two.
0:25:55 > 0:25:56Ouch!
0:25:56 > 0:25:59It was so unexpected and I started to cry.
0:25:59 > 0:26:01I don't blame you.
0:26:01 > 0:26:04After having her wound cleaned up by first-aiders, Chloe's now off
0:26:04 > 0:26:07to find out what can be done about her flapping ear flesh.
0:26:09 > 0:26:11Over to Dr Hannah Hardisty.
0:26:12 > 0:26:15- So which ear have you done? - This one.
0:26:15 > 0:26:18That one. Oh, you have, haven't you?
0:26:18 > 0:26:21Dr Hannah takes a closer look at Chloe's ear lobe
0:26:21 > 0:26:23to see what damage has been done.
0:26:23 > 0:26:25Fine, OK. It will heal back together.
0:26:25 > 0:26:27You just might have a little bit of a nick in your ear
0:26:27 > 0:26:29- and that's all, OK?- OK.
0:26:29 > 0:26:32Hopefully, what we can do is, we've got some magic glue,
0:26:32 > 0:26:35a bit like super glue, that we can just stick it together.
0:26:35 > 0:26:37If that doesn't work, then we'll have to re-evaluate
0:26:37 > 0:26:40and look at whether she needs a stitch to hold it together.
0:26:40 > 0:26:43Something tells me Chloe's hoping the glue will work.
0:26:43 > 0:26:45I don't want stitches.
0:26:45 > 0:26:47Thought you might say that.
0:26:47 > 0:26:49No way.
0:26:49 > 0:26:51Let's hope Nurse Sammy-Jo Grayston
0:26:51 > 0:26:53can wield her magic with the glue.
0:26:55 > 0:26:57That's it. Squeeze it till it sticks.
0:26:58 > 0:27:01- Oh, wow, I didn't feel that. - There you go.
0:27:01 > 0:27:03It looks like it's come together well.
0:27:03 > 0:27:05So does that mean the stitches have been avoided?
0:27:05 > 0:27:08We were just experimenting really to see whether
0:27:08 > 0:27:11the glue was sufficient enough to keep it closed.
0:27:11 > 0:27:13It's held really well, actually,
0:27:13 > 0:27:15so we're happy to send her home like that.
0:27:15 > 0:27:17I think someone will be relieved.
0:27:17 > 0:27:18No, not you, Gran.
0:27:18 > 0:27:22I am really happy because I don't have to have stitches.
0:27:22 > 0:27:26So stuck back together, Chloe's off home to practise
0:27:26 > 0:27:28a new style of goal celebration.
0:27:28 > 0:27:30Er, hang on, isn't that the move
0:27:30 > 0:27:32that got her into trouble in the first place?
0:27:32 > 0:27:35Next time on Operation Ouch!
0:27:35 > 0:27:37What would happen if your ears had no wax?
0:27:37 > 0:27:40- I can see right through to the other side.- Really?
0:27:40 > 0:27:43Has this girl swallowed something metal?
0:27:43 > 0:27:44BEEPING
0:27:44 > 0:27:48And we meet a man who grows spare body parts.
0:27:48 > 0:27:50I wonder who's going to end up with this!
0:27:50 > 0:27:52That's it till next time.
0:27:52 > 0:27:53BOTH: Bye!
0:27:58 > 0:28:02Subtitles by Red Bee Media Ltd