testosterone• Perhaps the secret's in the wrist action - testosterone isn't the only thing that males have to discharge.• Women usually have a small amount of the male hormone testosteronecirculating in their bodies.• Yet they still can not define any specificinfluence of testosterone on the behaviour of the human male.• The problem for the cockerel is that the higher his level of testosterone, the greater his parasite infestation.• One of the majorfunctions of the testes is to produce testosterone, the most potent androgen.• They have injected all kinds of animals at all stages of development with synthetictestosterone to see how it affected their behaviour.• First of all, the study simply measuredtotaltestosterone in the blood of female volunteers.