Season 1

Five volunteers put their lives in Michael Mosley's hands. Can food, fitness and lifestyle changes really transform their health and well-being in just three weeks?

1. 

   1. Episode 1

   2021-05-27 · 46m

   Michael runs tests on the five volunteers to assess their health, and examines what they eat. And then they begin a new training plan.

2. 

   2. Episode 2

   2021-06-03 · 46m

   The group come together for a rooftop high-intensity training session. They also go cold-water swimming. And a self-confessed 'junk food vegan' makes some changes.

3. 

   3. Episode 3

   2021-06-10 · 46m

   As the group tackle the final fitness challenge, Michael explores stress, exercise and inner motivation. He also reveals how far they've come in 21 days - with some astonishing results