I drink redbull and still manage to sleep

Except for a bad headache, nope

Me too, I don't even get headaches or anything

I drink coffee so much, I've become immune to it's effects.

No. Well, I feel different if don't drink in the morning. But if I really need to stay up i need to take a mis of cofee, coke, and redbull because it doesn't do much for me. Maybe because i've been drinking coffee since i'm little.

When I'm tired, I find that nothing works for me because why would it?

Well I'm actually a little allergic to it according my doctor. I get pain all over my legs arms and stomach, feel pretty sluggish and it never helps to wake me up in morning. Fuck coffee man.

I recently bought a brand of coffee that's supposed to be the strongest caffeine concentration you can buy, and I still need at least two cups.

i get no headaches and no real effect from caffeine, i just drink things like coffee and monster because i like the taste

Oh I feel a difference. My heart races, but I'm still tired af.