For a good night of sleep, consider getting your circadian rhythm back in sync with the sun. Here’s how to do it.

That second wave of energy is a normal part of the human circadian rhythm, but lifestyle factors also play a role.

Eight low-effort ways to feel more alert in the mornings, according to experts While some East Asian countries may have a ...

In a lab experiment, shift workers who only ate during daytime hours had lower heart risk factors than those who ate at night ...