We can't talk about morning sunlight and improved sleep hygiene without first addressing our circadian rhythm. This is the body's 24-hour sleep-wake cycle. It naturally responds to light and darkness, ...

REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.

Thanks to our internal body clock and hormone cycles, we naturally wake up in response ... which means going to sleep and waking up at the same time each day, is more important than sleep duration ...

The concept behind Garmin’s new Smart Alarm feature is pretty simple. To help you avoid a groggy start to your day, the watch ...

When is the best time to take nap? A sleep doctor reveals the optimal time of day to take a nap in order to feel rested and ...

It can vary depending on your sleeping pattern and schedule, but generally, the worst time to nap is during the late ...

The study also found that staying up later into the night provided students with extra time to ruminate ... Rather than forcing yourself to go to bed early and lying awake for hours, gradually ...

“Get up at the same time no matter what,” Fernandez-Mendoza recently recommended in The Conversation. “This will anchor your sleep/wake cycle ... get out of bed, go into another room ...