I recently stumbled across a dilemma in the gym. I wasn't getting the full efect from my workouts as I was before. I did a little research and I found that an increase in Nitric Oxide (NO) is what fuels muscle and brain concentration during a workout. What it does when it enters your bloodstream is dilate your blood vessels allowing more blood to flow into your muscles, giving you an AMAZING pre-workout pump and mental focus. I have gotten some opinions from people who have tried this product and other NO products and this one clearly blows the rest out of the water. It is a little on the expensive side at 56 bucks but you get 50 two-scoop servings in the larger, 549 gram container. I usually only use one scoop before my workout which gives me 100 servings and would last more than 4 months! You can use this for other things besides working out. Maybe you have an important meeting or a long sporting event to participate in. This stuff would give you the driving mental focus to let you carry it out to your maximum potential. The best thing about this is that the scoops are small in size so you know that there aren't a bunch of added fillers in it, giving you the most bang for your buck.