Dr Michael Mosley and Peta Bee investigate the fascinating science behind a radical new approach to exercise, one that is incredibly time efficient. Research done by leading sports scientists has shown the extraordinary impact that *ultra short bursts* of high intensity intermittent training can have, whether you are an athlete or a sedentary couch potato. In Fast Exercise, Michael Mosley, a sloth, teams up with super-fit health journalist Peta Bee to dispel myths and show you how to get the most out of exercise, whatever your age or level of fitness. They offer practical, science based advice and a range of novel work outs designed for the time-starved generation. Workouts that can be done anywhere, anytime and which fit unobtrusively into even the busiest day. This is a book for those, like Michael, who don't enjoy exercising but want to lose fat and stay healthy. It is for those, like Peta, who love exercise and want to get the most from it. It is also for those who are simply curious about how their bodies work.