People I know consume a lot of caffeine.

Amphetamines. Short of that, uh....lots of coffee and chocolate. Keep moving, and always have some task for yourself. If you stop moving to sleep you'll go.

Red Bull, coffee, a sugar cookie, just have lots o' caffeine I suppose.

You should drink coffee, but not too much: just 4 cups in the day, and not after 5pm or you won't sleep tonight either.

I find that 5 hour energy, while disgusting and a little pricey, works for at least as long as its name implies. And you don't crash like you would with other stuff.

Yap, coffee or energy drinks would be helpful ^^ Remember when I was so sleepy what helped me was strong, black and very sweet espresso and energy drink just after

Welp, in similar situations, I drink a can o' Monster Energy to keep me awake!

Work with a fennec.

Get too angry at the screeching little shit to feel tired.

Done that, but unlike others I don't drink coffee or redbull/energy drinks, what I usually do is avoid eating large amounts of food as that makes you feel tired. Don't stop for too long, inactivity just makes you want to sleep so keep your blood pumping (Unless you have desk job then that's really hard to do), and just eat sugar throughout the day to try and keep your energy levels up. Other than that you just need to tough it out.