Wearing blue-light glasses just before hitting the sack can help you get a better night's sleep and help you work better the next day.

The brain's way to remove waste, the glymphatic system, is synced to circadian rhythms, research in mice shows. The findings may be bad news for nappers.

There could be ways to speed up biological clocks, researchers say. That could be help people adapt to the time change associated with long distance travel.

"...many of us may be experiencing circadian disruption which could lead to fatigue, mood changes, changes in sleep patterns, and decreased immune function."

When does intermittent fasting work best? Contrary to recent findings, new research says skipping breakfast is worse than skipping a pre-bedtime snack.

COVID-19's disruptions to your routine or your livelihood make it more important than ever to get good sleep. Researchers have four tips for you.

The brain's global signal fluctuation decreases as the day goes by, a study finds. Does time of day affect brain scans in research and medical testing?

The discovery of why some people are extreme "morning larks" could lead to therapies for inherited sleep disorders and those due to shift work or jet lag.

Altering people's circadian rhythms could help treat a range of conditions. New research on melatonin receptors may be the first step.

If you've just had surgery, researchers have found that you may want to take anti-inflammatories in the morning or at noon, but not at night.