Blood Brain Freeze
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Transcript
| Line | From | To | |
|---|---|---|---|
BELL RINGS | 0:00:02 | 0:00:03 | |
Feel the burn, Colin. That's it. | 0:00:03 | 0:00:04 | |
Oh, crumpets, McCork, I don't know if I can keep this up! | 0:00:04 | 0:00:09 | |
Huh, you call THAT a challenge? | 0:00:09 | 0:00:11 | |
Aargh! | 0:00:11 | 0:00:13 | |
So then, Doctor Know-It-All, | 0:00:13 | 0:00:15 | |
seeing as you find everything so easy, riddle me this. | 0:00:15 | 0:00:20 | |
Rich people want me, poor people have me | 0:00:20 | 0:00:24 | |
and if you eat me, you will die. | 0:00:24 | 0:00:27 | |
-What am I? -Hmm. | 0:00:27 | 0:00:29 | |
Time starts now. | 0:00:29 | 0:00:32 | |
Rich people want me, poor people have me... | 0:00:32 | 0:00:35 | |
BELL RINGS | 0:00:35 | 0:00:37 | |
Aargh! | 0:00:37 | 0:00:39 | |
Positions, everyone! | 0:00:39 | 0:00:40 | |
This is Brain Freeze | 0:00:40 | 0:00:43 | |
with Dr Knowles, | 0:00:43 | 0:00:46 | |
Professor McCork... | 0:00:46 | 0:00:48 | |
..Colin, the floor manager | 0:00:49 | 0:00:52 | |
and Ms Hucklebuck. | 0:00:52 | 0:00:54 | |
Stand by! | 0:00:54 | 0:00:56 | |
Come on, everybody. | 0:00:56 | 0:00:59 | |
It's time for... | 0:01:01 | 0:01:03 | |
Today we're asking how does my heart keep beating? | 0:01:05 | 0:01:09 | |
The heart is a powerful muscle that pumps blood around our bodies. | 0:01:09 | 0:01:12 | |
Arteries carry oxygen-rich blood away from the heart to all | 0:01:12 | 0:01:16 | |
parts of the body. | 0:01:16 | 0:01:17 | |
Smaller capillaries deliver this oxygen and nutrients into our | 0:01:17 | 0:01:21 | |
organs and tissues, and veins return the blood, | 0:01:21 | 0:01:23 | |
which now has most of its oxygen removed, back to the heart | 0:01:23 | 0:01:27 | |
where the whole process starts again. | 0:01:27 | 0:01:29 | |
And did you know that if you laid all your blood vessels end-to-end | 0:01:29 | 0:01:32 | |
they'd be long enough to go around the Earth | 0:01:32 | 0:01:34 | |
almost two and a half times? | 0:01:34 | 0:01:37 | |
Rich people need me, poor people have me... | 0:01:37 | 0:01:42 | |
Er, Dr Knowles? | 0:01:42 | 0:01:44 | |
..and if you eat me you will die. | 0:01:44 | 0:01:47 | |
Right, come with me. I know exactly what you need. | 0:01:47 | 0:01:49 | |
-Aargh! -Cut cameras. Cut. | 0:01:49 | 0:01:53 | |
And we're clear! | 0:01:53 | 0:01:55 | |
Whoa, this actually feels quite good. | 0:01:55 | 0:01:58 | |
That's it, Dr Knowles. Pump those legs. | 0:01:58 | 0:02:01 | |
The key I find, Dr Knowles, is to keep it slow and steady. | 0:02:01 | 0:02:05 | |
Hmm, maybe I'll just try it a bit faster. | 0:02:05 | 0:02:08 | |
Careful. Colin's tiny legs can't keep up. | 0:02:08 | 0:02:12 | |
But it's so much fun. | 0:02:12 | 0:02:14 | |
My head feels clearer already. | 0:02:14 | 0:02:16 | |
I can't keep up! | 0:02:16 | 0:02:18 | |
Do something, McCork! | 0:02:18 | 0:02:20 | |
BELL RINGS | 0:02:20 | 0:02:22 | |
Positio-o-o-o-o-ons! | 0:02:24 | 0:02:25 | |
Ow! | 0:02:25 | 0:02:27 | |
So, Dr Knowles, how does my heart keep beating? | 0:02:32 | 0:02:36 | |
Your heart beats around 100,000 times per day. | 0:02:36 | 0:02:39 | |
That's about 35 million times a year. | 0:02:39 | 0:02:42 | |
No holidays or anything? | 0:02:42 | 0:02:44 | |
What a thankless job! | 0:02:44 | 0:02:45 | |
These heartbeats are controlled by groups of cells called pacemakers | 0:02:45 | 0:02:49 | |
which produce small electric currents that stimulate the muscles | 0:02:49 | 0:02:52 | |
of the heart to contract and then relax, creating a heartbeat. | 0:02:52 | 0:02:56 | |
When you exercise, your heart beats faster to deliver more oxygen | 0:02:56 | 0:02:59 | |
to your muscles, | 0:02:59 | 0:03:01 | |
but it also increases blood flow to the brain, making you feel | 0:03:01 | 0:03:04 | |
more alert and awake during exercise and more focused afterwards. | 0:03:04 | 0:03:07 | |
Healthy body, healthy mind. | 0:03:07 | 0:03:10 | |
See you next time. | 0:03:10 | 0:03:11 | |
Well, Dr Brainy-Boots, solved my riddle yet? | 0:03:13 | 0:03:17 | |
Time's nearly up. | 0:03:17 | 0:03:19 | |
No time. Exercising my brain. | 0:03:19 | 0:03:21 | |
Oh, McCork, I don't think I can take another session. | 0:03:21 | 0:03:25 | |
Ah, come on, Colin, it's better than just sitting around doing nothing. | 0:03:25 | 0:03:30 | |
Ah, that's it! | 0:03:30 | 0:03:32 | |
Nothing! | 0:03:32 | 0:03:33 | |
Rich people need nothing. Poor people have nothing. | 0:03:33 | 0:03:36 | |
And if you eat nothing, you'll die. | 0:03:36 | 0:03:40 | |
Yes, riddle solved! | 0:03:40 | 0:03:42 | |
Congratulations, McCork, you've solved the riddle. | 0:03:42 | 0:03:46 | |
Did I? What's a riddle? | 0:03:46 | 0:03:48 | |
Hard luck, Dr Knowles. | 0:03:48 | 0:03:50 | |
You'll just have to try harder next time. | 0:03:50 | 0:03:54 | |
Oh, come on, really?! | 0:03:54 | 0:03:56 | |
He gets the credit? | 0:03:56 | 0:03:58 | |
Urgh, sometimes I wonder why I bother! Aargh! | 0:03:58 | 0:04:01 |