I’ve always slept with one foot sticking out from underneath the covers. I have no idea why, or when it started, but unless it’s particularly cold in my room, one foot gets to breathe. I never thought much of it, but one New York Magazine writer was driven to find out why she did the same—and there is actually a reason!
Natalie Dautovitch, the spokesperson for the National Sleep Foundation and a psychology professor at the University of Alabama, says the habit probably stems from the human body’s need to cool down before sleep. Your temperature drops mid-slumber, and manipulating that drop before you hit the sheets can help ease you toward sleep—think of it as an even more natural melatonin. So you can take a hot shower or drink a cup of tea, as writer Melissa Dahl suggests, or you can open a window and stick out your foot.