Drinking alcohol can affect your sleeping patterns. In a new review of studies, alcohol was determined to be not useful for improving your sleep.
The studies show that alcohol can increase the amount of deep sleep or “slow-wave sleep” which an essential for repairing the body and immune system, but can also promote snoring and poor breathing. Alcohol also decreases your amount of time spent in REM sleep which is essential for concentrating, memory, and motor skills.
Some people with insomnia use alcohol as a sleep aid, but the effect of consolidating in one half of sleeping and disrupted sleep in the other causes less restful sleep.