There’s long been debate about whether those who swear they can get by on 4-6 hours of sleep a night are telling a porkie, and a landmark sleep study at the University of California is turning a nightlight on their claims. Neuroscientist/sleep researcher Ying-Hui Fu says most of us need 7-9 hours a night, but there are always exceptions… The study has found a small group of people known as “naturally short sleepers” have a rare gene that helps their bodies mentally and physically recover from their days in a shortened window of time. Fu says researchers will use the study to figure out if there’s a way for the rest of us to get less sleep without tanking our health. She reckons “everybody can use more waking hours” – even if you use it to “just watch movies”. We concur…