My personal trainer recommended Pain Punch, so I tried it and it worked so my wife also tried it with the same results. I work a 10 1/2 hour shift in a warehouse on Mondays and Tuesdays and workout on Wednesdays. I drink a bottle on each of theses days and one on Thursday. The results are so good, that we are now on automatic shipments. I recommended Pain Punch to my dentist who was impressed with the list of ingredients in the product.