Isn’t it strange that most of you tend to feel your eyelids drooping once it passes midnight, and wake up at dawn?
Well, what do you think is the reason behind the sudden feeling of sleepiness?
It’s melatonin, also known as the darkness hormone. Now, there is a very interesting relation between melatonin and sleep. This hormone functions by its stimulation with light and dark. Exposure to light stimulates a nerve pathway to the brain’s hypothalamus, where the suprachiasmatic nucleus (SCN) instigates signals that control the hormone’s production.