What happens when we SLEEP? (SLEEP SCIENCE EXPLAINED)

The science of sleep explained. Please consider subscribing and liking the video, it helps the channel a lot! :) 00:00 - Intro 01:05 - Circadian rhythm (melatonin) 02:16 - Jet lag 03:18 - Sleep pressure (adenosine) 03:58 - Caffeine 06:12 - REM sleep 08:17 - NREM sleep 09:30 - Why do we sleep? - My full chest x-ray tutorial series: https://www.udemy.com/course/chest-x-ray-interpretation/?referralCode=6AC49819156F3054239D - My full abdominal x-ray tutorial series: https://www.udemy.com/course/abdominal-x-ray-interpretation/?referralCode=B8544B0BE364CE0E9482