:shock: :eek: :eek: :eek: :( :eek: :eek: :eek: :shock:
Wake:REM:NREM ratio changes across lifespan
http://thesleepcycle.com/wp-content/...vertimejpg.jpg
hypnogram of a young adult (~25 years old)
http://thesleepcycle.com/wp-content/...onogramjpg.jpg
hypnogram of an elderly individual (~75 years old)
http://thesleepcycle.com/wp-content/...ntologyjpg.jpg
Original website (full article)
http://thesleepcycle.com/sleep-over-a-lifetime/