late nights mean feeling on the verge of sleeping for the whole day.
i remember when i could stay up as late as i wanted and didn't suffer too much the next day.
these days, if i stay up much later than a little past midnight, i'm in a constant state of zombie mode. i just woke up and can't wipe the sleep off my eyes mode. my body and mind aren't functioning fast enough mode. coffee won't help, it's sleep i need mode.