Sometimes I stay up until 1–3 a.m. because I'm working on a problem that's so interesting I can't stop until I make progress. If I know I'm only going to get a few hours of sleep, I'll take 5–10 g of creatine, drink plenty of water, and go to bed. The next morning, I usually don't wake up with a headache. If I skip the creatine under the same conditions, I'm much more likely to wake up with a headache after a short n…
https://my.clevelandclinic.org/health/diseases/21517-dehydra...