Gave it a few days to work its way through the body. With taking the same supps I normally take. Can feel a little difference. Workouts seem a little more intense and pushing the weight a little stronger. I am a 50yr old male. Weight training since high school with several different supps all along. so far I am really impresses and really works the product to me. This is really great and really awesome. You are have a good day each of your guys because you have a really great customer service and I am also impressed with your shipping. it just took 3 days to deliver my package to my mail box.