Your body follows a circadian rhythm that influences everything from how well your medications work to the best time for exercise.

The blood test could be a breakthrough in circadian rhythm research Can a blood test tell what time it is in your body? Scientists at Northwestern University think so. In a study published Monday in ...

Using an ultra-high-resolution imaging technology called 7 Tesla functional MRI (fMRI) on human participants, researchers ...

Inside your body, an intricate communication network constantly monitors breathing, heart rate, digestion, and immune ...

Most of us don't notice our internal clocks until they're out of whack with the time of day, usually because of jetlag or a change in sleep patterns. Like a clock that needs to be set daily, the brain ...

As modern lifestyles increasingly challenge the body's natural circadian rhythm, the American Heart Association is ...

This neuroscientist shares how our bodies guide the way we act and think, and how to listen to it for clues. Have you ever been startled by someone suddenly talking to you when you thought you were ...

There are a number of health-related applications that benefit from periodic or constant monitoring of core body temperature. Currently conventional techniques for measuring internal body temperature ...

The body may have an internal scale that senses how much a person weighs, so the body can regulate fat mass in response, a new study in rodents suggests. If the findings hold up in humans, the ...

Syncing your circadian rhythm to a natural light-dark cycle could improve your health and well-being. nambitomo/iStock via Getty Images Plus Anyone who has suffered from jet lag or struggled after ...