Most people have heard of REM or NREM sleep. Fewer know how each stage of sleep contributes to well being, or how sleep stages work together. In this guide, you'll learn about the stages of sleep, and how they contribute to the recovery of your brain and body.

You may know that REM is the sleep stage when your most vivid, weird, and occasionally scary dreams occur. You should also know that it's essential for memory consolidation, mental focus, and emotional regulation.