USP Labs Jack3d review by

July 4, 2018
Solid taste, easy to mix and goes down easily. I'm personally a stim junkie and for any preworkout to hit me I need somewhere about minimum of 300mg caffeine. First time using this I took 2 scoops for the 270mg energy boost. Effects were slower than other preworkout but the energy I felt was immense. I could push harder and the pumps were just about right, not insane hard pumps but decent. I did see vascularity in my arms though and instantly focus harder on my workouts. The only con I can say for this product is the crash, I felt it right about the 2 hour mark in the gym and it hit me pretty hard. No jitters or tingling feeling, however would recommend for others to try.