First of all I have to say good job getting through to Oz, and faster than I expected! Great work there. For the rest of it I can't complain. I had a good chuckle about the packaging, thought you were taking the piss but it's a great disguise to be fair. Changes since I started? You could call it an all around "glow". Feels like women check me out more and maybe I get more respect from men? Comes down to confidence, posture and eye contact I reckon but theres been a noticable improvement in my attitude. The actual levels I honestly haven't had a test in ages but they must be great. I basically follow the protocol you recommend and use about 1 tube a month. You might be able to answer that better than me. Anyway cheers and you'll hear from me again in a couple months!
If testosterone deficiency occurs during foetal development, then masculinisation of the foetus will fail to occur normally and this may give rise to disorders of sex development. If testosterone deficiency occurs during puberty, a boy’s growth may slow and no growth spurt will be seen. The child may also fail to develop full sexual characteristics (hypogonadism) associated with men undergoing puberty, including development of pubic hair, growth of the penis and testes and deepening of the voice. Around the time of puberty, boys with too little testosterone may also have less than normal strength and endurance, and their arms and legs may continue to grow out of proportion with the rest of their body.
The second theory is similar and is known as "evolutionary neuroandrogenic (ENA) theory of male aggression".   Testosterone and other androgens have evolved to masculinize a brain in order to be competitive even to the point of risking harm to the person and others. By doing so, individuals with masculinized brains as a result of pre-natal and adult life testosterone and androgens enhance their resource acquiring abilities in order to survive, attract and copulate with mates as much as possible.  The masculinization of the brain is not just mediated by testosterone levels at the adult stage, but also testosterone exposure in the womb as a fetus. Higher pre-natal testosterone indicated by a low digit ratio as well as adult testosterone levels increased risk of fouls or aggression among male players in a soccer game.  Studies have also found higher pre-natal testosterone or lower digit ratio to be correlated with higher aggression in males.