Tag: sleep cycle

Melatonin, Sleep Cycles, and Health
Featured

Melatonin, Sleep Cycles, and Health

Melatonin is a peptide hormone secreted in the brain (mostly) and regulates sleep (for the most part). Sunlight acts on the retina to actively suppress its synthesis during the day, and the gradual loss of sunlight and this loss of suppression causes a spike near night which facilitates sleep.¬†But melatonin […]