Test-Cypionate is one of the most popular and commonly used testosterones by athletes and performance enhancers such as the everyday gym rat looking for a better physique. As are all testosterones, Test-Cypionate is defined by the ester that is attached, as the testosterone hormone is the same regardless of the ester attached. Perhaps the biggest reason this particular form is so popular is because it is so easy to use, meaning it’s one of the more convenient forms in-terms of application regarding frequency as well as efficiency.