How bad is that?

Hi, I'm 15 and I like caffeinated beverages. I wanted to ask if it's a problem that I had a strong coffee this morning, a 1.5L Booster Energy bottle, and three (0.33L) Bullit Energy cans. And I don't feel sick or energized in any way. So I'm wondering if that's a problem.

600mg caffeine?

Hello folks, I slept for two hours today because I had my driving test at noon. I took four 100mg caffeine tablets and drank two 250ml energy drinks. I also drank a bit of a latte. Now I feel like I'm going to quit, but I can't. My heart is beating a little fast, too….

How long does it take the body to overcome caffeine resistance?

I currently drink an energy drink almost every day and notice that my body is so resistant to caffeine that energy drinks barely have any effect anymore, and I often feel tired without them. How long would I have to abstain from caffeine for my resistance to decrease, for me to stay awake without caffeine,…