whatever works..Pful isn't much of a stim however. When its working you always feel relaxed and lucid. You really notice it in the gym when the weights keep going up even though you feel liek they shouldn't be.
I love Pfull. using it now on my cut (more like a 'reduction' at this point...taking a little break from the real cutting for another week. I've lost 26 pounds already) to keep the weights up and my head on straight.