Human: Is it true that if you drink a glass of water before bedtime you can lose weight? Assistant: 
It is not recommended to consume large amounts of liquids before going to sleep. Drinking too much liquid before bedtime can cause you to wake up in the middle of the night and urinate, which can disturb your sleep. Additionally, drinking too much liquid at once could lead to dehydration and headaches during the day. However, drinking a small amount of water or herbal tea an hour before bed may help you relax and get better sleep.