MYTH #4: YOU NEED 8 HOURS OF SLEEP A NIGHT
Like the eight-glasses-of-water rule, this super-specific edict doesn’t work for everyone all the time. The National Sleep Foundation recommends adults score seven to nine hours of sleep each night in order to function at the top of their game mentally and physically the next day, says Phillips. But that leaves plenty of leeway for individual sleep needs. Some people swear they can function fine on five or six hours per night, while others only feel rested with nine or so hours of snooze time.