What is REM sleep and how is it helpful?

REM or rapid eye movement is a deep sleep, where your body gets some of the most restful sleep. This is the stage where you dream, have more brain activity and move around less. Although your brain is active, it’s very relaxing and restorative sleep.

It takes time to reach the REM stage, so if your sleep is often interrupted during the night, you could be missing out on some important REM sleep. Throughout the night, you cycle through several sleep stages. Stages one and two are light sleep, stages three and four are deeper, REM is deepest. During the night, you move back and forth between the sleep stages and each time you reach REM it lasts a little longer.