Margaret Thatcher, who was known for sleeping only four hours a night, is often credited with saying “Sleep is for wimps!” But sleep is actually work. Putting down the phone, setting aside personal or political worries—these require discipline. True relaxation calls for training.
Sleep coaches used to treat mainly newborns (and their exhausted parents). But recently, as anxieties about sleep have spiked, grown-ups have found they need help with their habits too. A Gallup poll from 2023 found that…
