We’re heading into braai season and party time, which usually includes a few alcoholic beverages. One or two drinks with friends might help take the edge off, but did you know it also messes with your sleep? In this blog post we explore the relationship between sleep and alcohol.
Sleep and alcohol: You fall asleep faster
Because alcohol is a depressant, it makes you fall asleep faster. It encourages the production of a brain chemical called adenosine, which helps you fall asleep quicker, however your sleep is interrupted as those chemicals wear off.
Sleep and alcohol: You never quite get into REM sleep
For the first half of the night, you might experience deep sleep. But this means you skip that lighter REM stage of sleep, which helps process emotion and memory. As the alcohol starts to wear off, your sleep becomes much lighter and less restful. Finnish researchers found in a 2018 study that moderate alcohol intake (two drinks per day for men and one for women) reduced sleep quality by a whopping 24%. Heavy alcohol intake reduced sleep quality by nearly 40%.
Sleep and alcohol: Your body becomes dehydrated
Alcohol is a diuretic, acting on the kidneys to make you urinate more fluid than you take in – which could lead to a restless night. Going to bed even slightly dehydrated can also lead to disruptive snoring due to a drier mouth. Alternating alcoholic drinks with water can help to balance out these effects and help limit the number of units you consume, meaning you will have a much more restful night’s sleep.
Sleep and alcohol: You might get night sweats
Night sweats are common when people drink alcohol in the evening. Alcohol affects the nervous system and how the body regulates and senses body temperature. People might sweat more after drinking if they have alcohol intolerance and especially if they’re experiencing alcohol withdrawal.
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Sleep and alcohol: Protect your sleep when you drink
If you plan to drink on your next night out, take these steps to protect your sleep:
- Stop drinking at least three hours before you plan to sleep
- Drink a glass of water between each alcoholic beverage and a few glasses of water before going to bed
- Don’t drink alcohol if you are also taking sleeping pills