With millions of people swapping the gym for the living room during the Covid-19 pandemic, Mehreen Baig delves into the latest science to find the best way to get fit at home. She uncovers exciting new research testing the theory that just one minute of strength training per week on each main muscle group might reduce your risk of diabetes and heart disease, and also looks at the impact wearable fitness tech actually has on our willpower to stick to an exercise plan. Later, she investigates whether popular supplements like pre-trainers and protein shakes really work.