How come sugar free red bull makes me more hyper?
Well i love red bull especially on friday PE day. So i usally get a can but i have tried both flavours and sugar free red bull makes me react way more crazy and hyper and i often misbehave. So is it the caffeine or the sugar that takes effect.

The caffeine hits you just a bit faster and harder in the diet drink – because you body doesn’t have to break down and digest sugar to get to it.
I remember reading that you get drunk faster when using diet cola as a mixer, instead of regular cola for that reason.