Episode 3
Does caffeine really help us to stay alert and what are the alternatives? In this programme some surprising ways to boost our brains are put to the test. Also medical journalist Michael Mosley examines the growing trend for electronic cigarettes and asks if they are safe. Dr Chris van Tulleken investigates if household chores can count as exercise. Dr Saleyha Ahsan gives first-aid tips on how to treat someone suffering from hypothermia and surgeon Gabriel Weston sees life-saving surgery that involves removing all the blood from a patient's body.
Trailer
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