[galangalalgol]

I am also like this. And after long periods of high intake iycan quit with no withdrawal. After I was diagnosed (as an adult) with ADHD my doctor told me caffeine doesn't affect people with ADHD the same way.

Edit: I can say that a pre-workout with 300mg made positive differences in a progress plot on a beginning strength program. But there were other things in there too. When I switched to coffee, creatine, beta alanine, and taurine, the effects did not persist.