Testosterone is the most potent, naturally occurring androgen that is formed in the human body. It is responsible for characteristics specific to males and their sexual traits. When that long-acting volume of testosterone is injected, it becomes stored in what is known as a depot in the body, and slowly released over a short period of time. Peaking within 1-2 days after injection, the testosterone is then steadily released over the next 12 days and completely tapers out after approximately 3 weeks.

One of the it's major benefits of taking is that it can rise up the level of muscle repair. This means when it gets injured by bodybuilders during practice or while participating in an event they are less likely to spend lots of time sitting out. They can get their body repaired fast and be back to the top of their game in no time at all. Testosterone cypionate also encourages the muscles to repair themselves faster. When someone is working out to gain muscle they actually tear the muscles during that process. It is during the healing process though that the muscles grow and earn more definition. This process can be sped up with the use of a steroid such as testosterone cypionate but you have to use some assistant near of this product. Further, because increased lean tissue improves our metabolic rate and because Testosterone-Cypionate affects muscle wasting hormones in a positive manner body-fat is often reduced when the steroid is used.

Comment from Expert

Using Testosterone-Cypionate will not automatically lead you to gaining massive amounts of muscle tissue on its own; if a large muscular physique is what you are after you have to feed it but by doing so in conjunction with testosterone therapy we increase the efficiency of the food we are eating which can lead to a more muscular physique.     
The most common side-effects brought on by Testosterone-Cypionate are of an estrogenic nature. Testosterone will convert to estrogen through the aromatase process and can bring about such negative effects such as Gynecomastia, water retention, blood pressure and cholesterol issues to name a few. Testosterone-Cypionate cycle, most will find 8 weeks of use to be the bear minimum with 16 weeks being far more efficient.