I'm one of those weird people for whom caffeine doesn't really seem to do anything. My normal daily consumption of the stuff is zero, because I don't drink coff

I'm one of those weird people for whom caffeine doesn't really seem to do anything. My normal daily consumption of the stuff is zero, because I don't drink coffee or tea. Every now and again if I have an essay crisis after a bad night's sleep, I'll pop three or four times the "don't take more than this" dosage of Pro Plus, which seems to have a fairly minor effect. It has been a few months since I last did this. I prefer theobromine.