This supp is a must in my pre-wo rotation now. Ive never been a fan of arginine or pump products, i prefer to add my own creatine, andis so cheap i can add that myself with ease. So what part of the usuall pre-wo does that leave? THE STIMS/FOCUS. dominates this part with ease. Loaded with about 10g of , ALCAR and other brain boosters its far and above any other stim product i know of. The best part is its only caffiene. So i can add other stims to fit my workout needs and such but always get my brain boosters in. It does leave a knot in my head but once i start training ive never felt better and dominated so many workouts in a row on any product. My mental state is so good that i never fear of missing lifts anymore since i started. Enjoy.