Testosterone Enanthate is very similar to Testosterone with the Cypionate ester, and really, in most respects, the two are interchangeable. They differ by a slightly different ester length, which is really too Before going any further, I’m going to quote from my profile on Cypionate, since it’s 100% applicable here: “Testosterone is a highly anabolic and androgenic hormone, it has an anabolic (muscle building) as well as anabolic rating of 100 each, respectively. Testosterone exerts the majority of its effects by promoting increased nitrogen retention in the muscle.Testosterone is also known to increases levels of the growth factor IGF-1 in both the muscle tissue as well as the liver.Testosterone also increases the activity of satellite cells,which are cells that play an active role in repairing exercise-damaged muscle. Testosterone exerts these effects primarily by genomic mechanisms, meaning that it binds to the androgen receptor (AR) thus initiating gene transcription. This stimulation of the AR promotes various of the AR dependant mechanisms for both muscle gain and fat loss, as well as reducing catabolic glucocorticoid hormones,and increasing red blood cell production. Testosterone may even aid in protecting the heart against coronary disease.Testosterone binds to the AR on fat cells resulting in fat break-down and also prevents new fat formation.