Drs Chris and Xand van Tulleken investigate the science of exercise and the dangers of inactivity. Is modern exercise a wellness cult? Or is it a vital cure for a world that’s struggling with ill health and stuck on the sofa? Most of us might like to get a bit fitter, but how easy is it to...

So we’ve got a comprehensive overview of the chicken planet we live on... Do we still want to eat it? And if NOT, what are the alternatives? Dr Chris van Tulleken wrestles with the final dilemma: slaughter. Could he bring himself to dispatch an animal himself? Is he happy supporting an industry...