How much sleep do adults need?

The American Academy of Sleep Medicine and the Sleep Research Society recommend 7 or more hours a night for adults aged 18 to 60. Just over a third of US adults report sleeping less than 7 hours. In a 2010 meta-analysis, people sleeping under 6 hours had about 12% higher mortality than those sleeping 7 to 8 hours.

Source: Watson et al. (2015), Sleep; CDC BRFSS (2022); Cappuccio et al. (2010), Sleep