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.     
I am 15 6’1 about 150 pounds. I have recently been taking a less serious protein powder and I have been drinking around 2-3 shakes a day with 1-2 scoops each. I usually have one in the mourning as a meal replacement and one when i get home to replace the want for junk food, and another one after I work out/ before bed. I Work out for about 45 minutes each day, I usually try and work out upper body, core, and lower body, I try and get my whole body. However there aren’t any serious work outs that I do, I usually just do around 50 reps per section. So I am looking to get myotein, and I am wondering that if I start to take myotein the same way and the same amount, what kind of muscles gain and mass gain can I expect to see.
For the first month, I took 2 pills as directed (Andro400 Max)- ZERO benefits. Being 58 years old, I increased dosage to 4 pills in the morning as directed – ZERO benefits. I only need to lose 35lbs. to be at my perfect weight. During this time, I worked out 3 times a week for hrs per workout. I have actually gained a few lbs. probably due to muscle gain. Bottomline, Zero increase in energy, sex drive, testosterone, etc… Additionally, I am not a drinker, nor smoker. I rarely eat fast foods and do not over indulge in snacks or garage foods. I rated this product a 1 star because there is NO zero star rating. I am now looking for a refund as advertised, seeing that I am under the 90 day limit and product is finished!