Jack3d is one of, if not the most popular pre-workout supplement of 2010, and we can see why. It's reasonably priced, it works, and it tastes pretty good. Aside from it feeling like you're stealing from your granny's medicine cabinet everytime you grab the container, we don't have too many negative things to say about Jack3d. It's a wonderful product, but it isn't without it's flaws.
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