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A large England study found fewer NHS visits for sleep, heart, and mental health issues after clocks moved back in autumn.

Twice every year, just like clockwork (if you'll pardon the pun), we humans meddle with time to afford ourselves some extra hours of daylight. Now with spring underway, we're approaching the night ...

As the clocks "go forward" for large parts of the U.S. this weekend, you may well miss the resulting lost hour of sleep.

Before I was diagnosed with bipolar disorder, I didn’t think twice about sleep. I’d always been a night owl, but I went to bed reasonably early. And I never had trouble falling asleep or getting eight ...