My husband and I have been working out for the past 1.5 months and although the Extreme Edge Pre Workout works great for my husband - giving him the energy he needs to crank it up and put in an extreme workout at 4AM, I am allergic to caffeine, so I don't use a pre-workout. If I could, I would be all over this product too. I use the Extreme Edge Post workout which is proving to bring maximum results to my new body sculpting figure. I love how the ingredients are not chemicals, but all natural too.