Watch yourself with Jack3d and OEP, I would stick with 1 OEP and 1 scoop of Jack3d, go up on either of them but not both from there. I take 1 OEP/1 Jack3d in the AM for fasted cardio and am fine, granted after I am a sweaty, on fire mess but it is fun nonetheless! I like Alpha-T2 and AS-GT right now, amazing focus and fat burning combo right there.