Train and bus drivers, doctors and carers, employees in companies where machines run around the clock: In many industries, people work in shifts. Some start early in the morning, or at midday. Others ...

In this article I summarize the benefits of exercise and offer specific tips on how to exercise for each benefit.

A vast majority of Americans wake up regularly during the night, according to a U.S. News survey. Sleep expert Wendy Troxel explains why this happens and how to help.

Explore the science behind why we often feel better in the morning. Discover how mental health fluctuates throughout the day.

Some American lawmakers are therefore proposing to “lock the clock” and stay on Daylight Saving Time all year round. Florida ...

Spending lower proportions of time in two deep sleep stages — including REM sleep — may be linked to volume changes in ...