Yes, 10 mg daily. At that level you will see results but nothing like AAS. 5 mg or less and I doubt you’ll experience any real increase in strength or size. Also, it takes a few days to a week or so to really feel them (. strong pumps, and certainly calf cramps during HIIT). You can take safely for 12 weeks, but the my returns diminish around week 8, so I’d suggest 2 months (or 2 bottles). Stacks well with 30 mg Rad 140 daily, split dosed. No AI needed, but anti-e (. clomid/novaldex) for pct at those dosages. Equal time off after cycle is probably overkill, but seems like a safe protocol.
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.