You may have fond memories of your mother or grandmother making you a glass of warm milk to help you fall asleep.
This may not be just an old wives’ tale. Milk contains the amino acid tryptophan, a precursor to the brain chemical serotonin.
Although the topic is a controversial one, some people believe that tryptophan and serotonin might make it easier to sleep. Or maybe a simple glass of milk brings back soothing childhood memories, which help you drift off.
