human
Is it true that some people can't sleep without a glass of wine?
assistant
Yes, it is true that some people can’t sleep without a glass of wine. Wine contains an amino acid called tryptophan which helps to induce sleepiness. Tryptophan is the precursor for serotonin, and low levels of serotonin are associated with insomnia. So it's possible that drinking a glass of wine could help you fall asleep.