hooten true feeded you know just astro is responsible for the development of a number of male physical characteristics including hair patterns on the head of it also determines beard growth affects muscles and a man's overall personality as the story gets a much more complex hormones than some people might think. most testosterone is produced in the testes but a small amount comes from the adrenal cortex. the specific sources of testosterone of alighting cells the hormones that are responsible for developing male characteristics in the body are called androgens the most important androgen testosterone. levels of testosterone rise dramatically during puberty and then remain at a high level but researchers have also found significant short term increases in this home and immediately after birth. while home thus posts a sign it's hard to say why that happens but it seems to be a part of the maturation process in the brain and in the male reproductive system the spirit of man was. christian of all brawn at the age of 20 he discovered that he had too little testosterone in his body doctors