Shalin reveals the ground-breaking therapy creating cancer fighting super cells. Plus, arch-rivals 'team virus' and 'team immune' battle it out on the sports field - all in the name of science!

Caroline learns easy ways to combat dangerous sedentary habits, Shalin tries strength training without going to the gym, and Sandro gets sweaty for science.

In part one, Caroline convinces volunteers to road-test four popular diets: Keto, Paleo, 5/2 and Flexitarian, Sandro examines which milks are healthiest, Shalin investigates if going gluten-free is safe.