A sleep expert details why you wake up groggy from a nap and how to make the most of your snack-sized slumber.

Some mornings, waking up might feel like interrupting a vivid alternate universe. You open your eyes to reality, but the ...

A complete sleep cycle can take an average of 90 -110 minutes, and “you cycle through all five stages several times each ...

These stages are the most dangerous because after five days of sleep deprivation, and if you've been hallucinating, you may ...

It’s also the stage of sleep where dreams occur. The brain will cycle through these various stages of sleep several times per night, taking about 90 minutes to two hours to complete a single cycle.

Creating a relaxing wind down routine can further help to improve your ability to sleep well and get more REM sleep. Opting ...

OxStu's breakdown on the science behind sleep, providing practical advice on how to establish a good sleep routine.

Public dozing, as at this all-night diner in Tokyo, is socially accepted. Scientists call this stage 1, the shallow end of sleep. It lasts maybe five minutes. Then, ascending from deep in the ...

More generally, these findings add weight to the importance of all stages of our sleep cycle, including REM sleep.” Overall, more research is required to understand the full clinical ...

ranging from heart rate to breathing rate and sleep stage percentages. When you first look at your sleep tracker data, all those numbers and graphs can feel dizzying. But tracking your sleep can ...