I have never thought that I would enjoy taking something like this, Onyx has seriously changed the way I look at my daily routine and has given me a boost. I noticed when I began taking it, that I was able to get a better cardio in. More intense. More miles. I have always had a fluctuating weight; this has helped me become unbelievably determined to eat right, stay on track with my workouts and keep me motivated during my working day. I know that it is not always the product, that hard work and a good diet is what brings you to your goals; but bringing this into my routine has noticeably made me much more dedicated to sticking with my end goal! My roommate is a health nut, body builder. He has me in the gym 2 hours a day and he takes a normal powder pre-workout. This definitely helps give him a run for his money. Totally worth giving a try, Add this to a good diet and busting your butt in the gym and you will see a much better outlook on life.