We know that getting enough sleep goes a long way toward helping us reach a healthy weight, but surprising new study results suggest that the mechanism works differently for men and women. Men who didn’t get enough sleep had higher levels of ghrelin, a hormone that makes us hungry, while women who didn’t get enough, had lower levels of GLP-1, a hormone that helps us feel full.

Still, the end result is similar: Men and women who are sleep-deprived want to eat more. So tuck yourself in at a reasonable hour!

MORE: Eat for Better Sleep