The hormone melatonin tells the brain and the body that it’s time to go to sleep, especially at night. We can’t sleep because during the day our brain will release less melatonin. The brain produces less melatonin as you get older.

Most sleeping pills contain melatonin to enhance its levels in human bodies. Melatonin tablets are great for those who
--A victim of nocturnal insomnia
--Trouble falling asleep or staying asleep
--I really got jet-lagged.
--Too overwhelmed to accomplish anything