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

When it comes to rest, people tend to think about it in terms of being awake or asleep. However, understanding your sleep ...

REM sleep goes even deeper into brain recovery, dreaming and processing memories and emotions. This is the sleep stage in ...

On a good night, we cycle four or five times through several stages of sleep, each with distinct qualities and purpose—a serpentine, surreal descent into an alternative world. Wile, the seven ...

The body goes through five stages of sleep during one night. You want to make sure that your body is completing all of the cycles that are intended in order to feel rested. Studies are also ...

The mode adjusts the temperature throughout the night according to the four/five stages of sleep, ensuring optimal comfort during each phase of the sleep cycle. They say there are four/five stages ...