"Have you noticed when you don't get enough sleep, you gain weight every time?" Dr. Northrup says. High levels of cortisol in your bloodstream can make you gain more abdominal fat, which can contribute to heart attacks, strokes and high cholesterol.
The key to getting more sleep is embracing bedtime, Dr. Northrup says. "I want women to get enough sleep, but I bet you feel guilty if you sleep more than eight hours. ... When I can, I'll get 15," she says. "When I can, I'll sleep that long and it does me a world of good. So I want to give you permission, all of you, when you have the chance, do that. Okay? It's a beauty treatment."