Discover how your body’s internal clock influences your weight and overall well-being — and how to get it back into sync.

"Every cell in your body that has DNA has a molecular clock that keeps its own time," she says. They're all part of your body ...

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, ...

Life can throw off your sleep-wake schedule—here are some steps you can take to reset your circadium rhythm, naturally.

With darker days ahead, one strategy to stay healthy is to align your DAILY HABITS with your body clocks. There's growing evidence that the TIMING of your sleep, exercise and your meals can play a ...