Melatonin is the hormone which is introduced by the pineal gland in the mind in reaction to darkness. This hormone is the thing that tells the brain of yours it’s time to begin getting sleepy.
It can help regulate different hormones within the body and works to keep the body’s circadian rhythm. Circadian rhythm is the internal clock which adjusts the twenty four hour day cycle. After it gets dark outside the body is going to begin producing more melatonin.