Missing just 80 minutes of sleep a night may lead to weight gain, Columbia study finds
The findings, published this week in the Annals of Internal Medicine, are based on pooled data from two randomised crossover trials involving 95 adults who normally slept seven to eight hours a night. During one phase of the study, participants delayed their bedtime by about 90 minutes, resulting in an average sleep loss of roughly 80 minutes each night for six weeks. In another phase, they followed their normal sleep routine.