I really felt the need to write a review on this pre-workout supplement. Most do nothing at all for me. This one, however, is different. Usually I take it pre-cardio, it gives me incredibleand concentration. 2 Scoops a day lasts 20 days. I wish it was cheaper though. Have not tried it pre-weights, since I like it so much for cardio, I prefer to save it just for that purpose. It mixes very easily, and I put a few scoops of Primaforce into the mix. However, if I don't drink it straight away the carb slam seems to sink to the bottom of the cup. The lemonade flavor is pretty good, but strong. Good job Scivation!. I already know I am purchasing more when this runs out!. Maybe come out with a larger size of this and carb slam too!.