Long flights play tricks with your internal clock in ways that make you hazy, tired, and out of sync with the world. Your body believes it’s 3 AM when the sun is hot, or you’re awake at midnight, ...

The clocks rolled back this weekend, signalling the end of daylight saving time and the start of long, dark winters. Of course, there is the short-term perk: the fact it allowed us an extra hour in ...

Plan on a glorious extra hour of sleep as most of America "falls back" into standard time. But make sure to get outside for some morning sun, too — it'll help your body clock reset faster.Daylight ...

Our bodies run on an internal clock that helps control when we sleep, wake up, eat, and feel alert. This internal timing system, often called the body clock, follows a roughly 24-hour cycle. It ...