Creatine supplements aid in the regeneration of ATP, the body’s preferred energy source for muscle exertion. More ATP means more muscle fuel to workout resulting in improved performance, increased muscle strength and better gains. Creatine Monohydrate was the original preferred choice of creatine. Manufacturers have now created more advanced formulas like Muscletech Cell Tech Hardcore which has additional ingredients to improve absorption. Creatine Ethyl Ester as found in BSN Cell Mass, Primaforce CEE and ALRI CR2 and Creatine Gluconate as found in Gaspari Nutrition Size On. These new formulas have taken over as the most popular creatine supplements.