Synopsis

In this three-part documentary series (BBC 2's Horizon: The Truth About Exercise), you'll learn everything you need to know about the effects of fasting, how the digestive system works, and the true benefits of exercise. First, Michael Mosley tests the notion that, in order to live longer, stay young and lose weight, humans must include fasting in their dietary regime. He goes on to swallow a microscopic camera to show viewers what's happening in his own digestive system. Experts then explain each step in our fully involuntary digestion process. In the final episode, scientists reveal new and shocking truths about the real effects exercise can have on the body.​​