Test prop works by making the muscles hold onto nitrogen, which means the muscles hold onto more protein. Holding onto proteins means better usage of energy, which subsequently means increase in muscle size and strength. Test prop has the ability to stop muscle wasting so you keep all of the muscle mass you worked hard at getting. There is no muscle wasting from the glucocorticoid hormones and red blood cell production is increased, which subsequently allows more oxygen to come in the body. Higher oxygen level in blood cells mean that you will not tire as fast and as much, what will than aid in recovery times as well.