Circadian rhythms are the cycles that tell the body when to sleep, wake, and eat—the biological and psychological processes that oscillate in predictable patterns each day. This internal clock ...

Inside practically every organism on Earth there’s a clock that keeps order. Known as the circadian rhythm. For humans, it’s located in the part of our brains called the hypothalamus.

If you’ve ever wondered why you can’t nod off at night it could be down to your body's internal clock - also known as the circadian rhythm. But what is the circadian rhythm? We all work on a ...