I have been taking Force Factor for about two months now. I have been taking the two doses of 4 pills, In the morning 1/2 hour before I eat and 4 a 1/2 hour before I lift. It gives me the edge I need to push even further then normal. My curls suddenly went from 6 reps to 15 and my shrugs went from 20 to 40 to 60 within weeks. I get a quicker pump, and muscle failure feels like it never comes, therefore I’m building muscle fast. I have gained 7 lbs of muscle since I have been on it.. I wouldn't choose any other pre-workout supplement because Force Factor works.