Muscletech products tend to run around $15-20 dollars more than what they are worth, so the Groupon price makes them worth trying. The serving size is a bit misleading though as you would have to use double the serving size to receive the effective doses of the ingredients within the product; therefore a single tub lasts a mere 15 days rather than the Listed 30.
The product does not really seem to boost the energy level. It was clumpy and did not mix well. No matter how much I tried to balance the amount per 8 oz serving there seemed to be always powder that did not mix, it was almost as if the product was old. Considered shipping it back.