James Clear delves into the science of sleep and how it changes with age. Citing Harvard Medical School and Stanford Sleep Epidemiology Research Centre researchers in a meta-analysis of 65 studies (done between 1960 and 2003 with 3,577 subjects aged 5 years to 102 years), he points out that as we get older, both the quality of our sleep and the amount of time we sleep decrease. Slow wave sleep—the phase thought to be responsible for tissue growth, muscle repair, and immune system repair—also dramatically decreases with age. Guess what that means for your ageing body. Continue reading.
Originally posted on Lifehacker.