Why do people get hyper late at night?

Question

it seems that all my friends & ppl i know get hyper late @ night & can go without sleep for a very long time & not even get tired.....i find this weird cuz i get tired instead of hyper the later @ night (or earlier in the morning) it is & i have 2 sleep @ least 10 hrs every day for me not to be tired......is this weird or normal? do u get hyper late @ night?

Answer 1

they are probably drinking something with caffeine late and causing them to be hyper