According to the Daily Mail of 65438+February 16, a recent study by SahmyookUniversity in Seoul, South Korea shows that milk milked at night contains more tryptophan and melatonin. These chemicals can help people reduce anxiety and promote sleep. There is a scientific basis for the sentence "Drinking a glass of warm milk before going to bed can get a good sleep".
Milk contains two hypnotic substances:
One is tryptophan, which can promote brain nerve cells to secrete the sleepy neurotransmitter serotonin;
The other is peptides that can regulate physiological functions. Among them, "opioid peptide" can combine with the central nervous system, play an anesthetic and analgesic role similar to opium, make people feel comfortable all over, and help relieve fatigue and fall asleep.
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References:
/shipping.people.com.cn/n/20141229/c85914-26290840.html "target =" _ blank "title =" People's Daily Online-Milk can help sleep/kloc. People's Daily Online-Milk can help people sleep 10 People should not drink milk before going to bed.