1. It makes you hungry
Alcohol is filled with carbohydrates which your body breaks down into sugar. This causes your blood sugar level to rise, so your body releases insulin to lower it.
When you stop drinking, your body is no longer getting the sugar, but the insulin continues to keep your blood sugar level low. Your body gives you hunger pangs to tell you to eat more so your blood sugar level can get back to normal.
3. It can make you do stupid stuff
Alcohol impairs your judgement which means you don't think before you do something, like these french students who stole a llama.
4. ....Which can sometimes make you more aggressive
"If someone provokes us while we're drunk, we don't take other factors into account, such as the consequences of rising to the bait. This can lead to violent reactions from people who would usually shrug things off."
Professor McMurran, University of Nottingham
6. It can make you forget
Your alcohol consumption impacts on your short-term memory (called a blackout). Ever woken up after a night out and can't remember anything from the night before? You've had a blackout.
There's no one cause of a blackout, but it's thought that having a high blood-alcohol level or drinking a lot in a short space of time can increase the chances of a blackout.