It is associated with learning and memory, regulating sleep, digestion, regulates mood, some muscular functions etc. It is a mood-boosting effect hormone or also known as nature’s feel-good chemical. If testosterone is secreted insufficient in men then it may lead to abnormalities including frailty and bone loss. It also promotes secondary sexual characteristics like increasing the mass of muscles and bones, growth of body hair etc. In males, it plays an important role in the development of male reproductive tissues testes and prostate. It is an anabolic steroid by nature which helps in building body muscles. If you have concerns about any of your hormones, talk to a qualified endocrinologist.Source: It is a male sex hormone. When they are in proper balance, hormones help the body thrive, but small problems with hormones can cause serious and life-altering symptoms. It causes puberty, increases bone density, triggers facial hair growth, and causes muscle mass growth and strength.