Bio Rocket Blast Review: There is no way that emphasize the importance of testosterone in men. Is by far, the hormone that gives your male characteristics and the characteristics of typical human behavior. Testosterone settings marked with changes in the body, and therefore the behavior. Most guys usually tend to get upset when they get older. One of the main reasons for the back of a decrease in the production of the male hormone. However, the problems that have hindered not only by a change in behavior. The loss of muscle mass, weight gain, especially in the stomach, fatigue and lack of awareness, decreased libido and erectile dysfunction are a very common consequences of decreased testosterone production.