Holly Klamer MS, RDN, is a registered dietitian-nutritionist with master's degrees in nutrition and exercise science. As Health's former nutrition editor, she kept track of supplement trends and ...

You toss, you turn, you can't fall asleep. Certainly, there are sleep medications that can be prescribed by a doctor. And with some investment of time, cognitive-behavioral therapy for insomnia is ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Fact: a terrible night’s sleep (or an all nighter) can leave you feeling awful the next day.