USP’s Jack3d Micro is one of the strongest pre-workout supplements out there. However there is one thing to consider when adding the product to your cart. Like the original it does build a tolerance reasonably fast. If you run the PWO once or twice a week you will be just fine. If you are an over dosing addict pumping the supplement every training, it’s effects will disappear very quickly. Do not push the serving count up higher and higher as you will end up getting further away from that first workout feeling. Just remember a pre-workout of this level should be used as a game day drink and/or an intensity checker. Complex formulas like this one are a good way to see how hard you actually train. The last thing you want to do is have your body relying on the supplement and not being able to work without it.
