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by Tiksi 3097 days ago
This happens to many people in around the same timeframe, I'm pretty sure it's due to GABA rebound https://www.nature.com/scitable/blog/mind-read/alcohol_sleep...

From what I recall, alcohol binds to GABA receptors, GABA builds up in the body, eventually metabolizes to glutamate which takes a few hours depending on how much you drink, but seems to be around half a night's sleep. The glutamate wakes you up and gives you energy, hence the strange "feeling great after a night of drinking on no sleep" thing.