Why do drunks get an hangover?

Hangovers occur after excessive alcohol consumption due to several factors. Firstly, alcohol leads to dehydration and electrolyte imbalances, as it is a diuretic. Additionally, the body experiences the effects of alcohol metabolism, producing toxic byproducts like acetaldehyde, which can cause nausea and headaches. Lastly, alcohol disrupts sleep patterns, contributing to fatigue and overall discomfort the next day.