What is the best way to stay awake until 4 am?

YouTube.

That is all.

Watch anime

What usually wakes me up is brushing my teeth, showering, watching a very interesting show/movie, playing video games.

Play video games, like Monster Hunter 3 Ultimate, League of Legends, DotA 2, Hearthstone, etc.

Stay awake. It's easy!

I srsly do that daily.
Do something that interest Ты and eat.

Be lonely have no one to talk to watch YouTube have a friend over

Watch a sh*t load of Крипипаста

Talk to strangers on internet e.e Wait for their replies...

Ingredients: Red Bull, coffee, Mountain Dew, Pixie Stix, Болталка Конфеты bars, and a PC. Instructions: Wait until a few минуты before the time Ты regularly go to sleep. Ingest coffee and a few Конфеты bars. Begin playing a game such as Amnesia или any horror game. Sip on your Mountain Dew as Ты play, and have another Конфеты bar while you're at it. Keep playing for a while, then switch to another game and repeat Назад step. After Ты get tired of your game(s), down a Red бык and some Pixie Stix, and start watching whichever YouTuber Ты like best. Have another Red бык as Ты watch, and finish off your Конфеты supply. Once Ты get tired of YouTube, head to the bathroom and wash your face with cold water. After that, head to Fanpop and try to finish the Болталка pop quiz. Talk with anyone else who's on as well. Once Ты get sick of that, play some internet flash games until the designated time. (This is a tested method, and works very well if Ты have the determination.)

Watching anime. (;

SLEEP