The human body usually produces a wide range of compounds. In the male body, one of the most important of these compounds is testosterone, which is a male sex hormone responsible for all secondary male sexual characteristics. Production of this hormone usually starts at puberty. From the age of 12-13 years, the testicles of the teenage body usually starts producing the hormone. As a result, the testicles also start producing sperms. The hormone is also responsible for rapid muscle growth, increased bone density, high sexual stamina, impressive endurance, hair growth in the groin and many other things.
Men who experience delayed puberty as well as those who have hormonal imbalances can get testosterone replacement therapy, or TRT. This is a therapy aimed at restoring t-levels to the recommended levels. TRT is only offered by licensed medical practitioners at almost every medical facility.