Up all night (Whooose survey?) Oooh, surveyin' all night:

How do you wake from drowsiness?
• Ventilation
• Shouting
• Walking
• Coffee
• Red Bull

Reader-added tags include "No Monster Energy", "Year by year, all-nighters become impossible", and "Good night, Kogasa-san".

poll: walking. Far outmatching abusing coffee or other dope from convenience store.
When I had to be at college after all-nighter I never stand of sit still there. Slow walk along corridors can keep me long enough to do stuff there and get home.

E1: besides, coffee of a good quallity can knock off me into sleep.

My personal liquid death coffee mixture.

Tastes like satans ballsack but it will wake you and keep you awake.

I regularly fall asleep after a good cup of espresso. I kid you not.

Then again, whatever the hell the 7-Eleven pass off as their own blend of coffee... Never again. I once had a small cup at 8 AM going into work. By 8 PM, my hands were still shaking because of it...

The lesson that Kogasa-san has missed is "don't stay up all night singing karaoke just to catch an early flight".

Maybe there was a coffin hotel he could've napped in instead?