On Episode 20 of What The Flex?, we had a chat to Professor Greg Roach of CQ University, who specialises in sleep behaviour, particularly with athletes. He takes us through different types of sleep, how sleep (or lack-of) directly impacts training, and his best tips for getting the best possible nights sleep each night. Whether you love to nap, sleep lots, or hardly sleep at all, Professor Greg Roach answers all your sleep and training questions.