Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

The functions of the pineal gland include synthesizing the hormone melatonin from the neurotransmitter serotonin. Melatonin ...

Melatonin is a hormone the pineal gland produces that is essential for regulating sleep. It acts based on your body's natural 24-hour sleep-wake cycle (circadian rhythm). Melatonin production ...