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.     
It sounds like a creature from Jurassic World, but this plant is worth learning to pronounce, especially if you haven’t had great sex since dinosaurs roamed the earth. A 2012 study showed that consuming six grams of tribulus root for 60 days improved erections and frequency of sex in men with low sperm counts. It also reduced sexual fatigue . Furthermore, their testosterone jumped by a whopping 16%. “Trib,” as it’s called, is thorny and bitter, so look to a supplement for consuming it. Epiq’s Quad Test includes Tribulus terrestris. ( )
Great article. I found this while researching the IM Forums where you also have great info as well. I’ve read quite a bit all over the web. There’s so much confusion over this. I don’t have an opinion either for or against and can read between the lines/blurs/mumbo jumbo of what’s in print and find minimal reality of any facts supporting true positive results for any OTC T-booster product. This still leaves me in a quandary. I’m currently doing a cycle of 1-Andro/Anabolic Matrix and would like to keep my gains if any result from it. With all OTC products being pretty much useless for boosting test what would be a viable option for doing so as a PCT??