The product NO2Maximus was offered free with a nominal charge of 4.95 for shipping and promoted that it would support the devaelopment of weight loss and abdominal muscle development. I am smart enough to know that no products work without proper diet and exercise. That said after trying the product for 2 week maintaining a daily caloric intake of 2,000 calories (less on several) days and exercising with heavy cardio 4 to 5 times a week. This product did NOTHING to improve my results. To add insult to injury the company then billed my credit card 89.00 for the price of a product that sucks claiming that it was marketed as a 14 day trial. When contacted they would only agree to a 25 percent refund. It is a RIP OFF, STAY AWAY!!