Will alcohol help you sleep better?
Although alcohol may be thought to make falling asleep easier, it drastically reduces the quality of sleep. In fact, drinking after dinner can cause the first cycle of sleep, called quiet awakening, to break. During this one, the brain is still active but the body relaxes. Alcohol also causes regular awakenings due to adrenaline secretions, and disrupts sleep cycles as it blocks the entry of tryptophan into the brain. Moreover, as it dehydrates, it often happens that the person wakes up in the middle of the night to drink a glass of water. Sleep is less regenerative and less restful. Finally, it appears that alcohol is a diuretic, which further disrupts sleep and worsens sleep apnea.