Social media before bedtime wreaks havoc on our sleep − a sleep researcher explains why screens alone aren’t the main culprit
Research suggests that how often people check social media − and how emotionally engaged they are with it − can influence sleep even more than how much time they spend online.
Verywell Health19h
The 4 Stages of Sleep: What Happens During Each Cycle
REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.