Not sure if this will be related enough to pizzagate.

"According to WebMD, melatonin is a natural hormone secreted by the brain’s [pineal gland] that guides the body’s sleep-and-wake cycles. Each individual produces his or her own amount of melatonin but, generally, levels rise in the evening, making people tired, and decline in the morning when it’s time to wake up."

https://www.yahoo.com/lifestyle/daycare-workers-allegedly-dosed-toddlers-pre-nap-time-crime-common-youd-think-184831210.html?.tsrc=fauxdal