Everything about the stages of sleep

What is are the stages of Sleep?

Science recognises three stages or phases of sleep and two distinct activity types. When you first lay down your head and drift off you're in phase 1.

Sleep Phase 1: Dozing

This is a short period of light sleep. Perhaps only 5 or 10 minutes.

Sleep Phase 1: Dozing

Sleep Phase 2: Going Down

Sleep Phase 3: Deeper

Sleep Phase 4: REM

stages of sleep.