hmmmmm yah your right. Some days I will take mondafinil and adderall lol Usually with just adderall my HR is around 145 on the elliptical on level 7 which is just barely cruising so maybe i'll hold off. Im sure adderall probably speeds up metabolism like clen does. Maybe i'll try taking half my addy dose and just add a tiny bit of clen to see how I feel and check BP and HR. Thanks