Most people blame aging for spring fatigue, but the real culprit surprises everyone.

Add Yahoo as a preferred source to see more of our stories on Google. Sleep is important for a multitude of health reasons—including better heart health, sharper brain function, and stronger ...

With everything you’ve got going on in life, it can be hard to hit the recommended seven-plus hours of sleep each night. But new research suggests that regularly getting poor sleep may raise your risk ...