Story of your life: You’ve had a long, busy day, but the second your head hits the pillow, for no apparent reason, you’re wide awake. (We’ve been there.) Good news: There’s a new science-backed trick that could help you fall asleep and stay that way—unlike our other go-to, melatonin, it’s totally free.
In a recent study published by Indoor Air: International Journal of Indoor Environment and Health, scientists observed a group of healthy young adults sleeping over a period of five nights. Those who slept with the bedroom door open reported a better and longer night’s sleep than those who slept with the door closed.