Testosterone is a hormone also called an anabolic-androgenic steroid that is released from the brain throughout the entire body. It is also located in the testicles used for sperm production. This hormone is needed for deepening of the voice, hair growth, muscular growth, and sexual desire. The hormone is released from the brain to regulate bodily development and functions. Male infants are born with testosterone which increases as they become older and wildly fluctuates during puberty and in to young adulthood. Testosterone levels can be improved by using testosterone boosters like testogen, testo max, nugenix etc.. Purchase the best test booster on the market from testosteronebooster.top (this website has listed top 5 test boosters).