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’ve been coughing for 8 years…….that’s right….8 years. I cough summer, winter spring and fall. I’ve been to my family doctor, allergist, an ear nose and throat doctor…..to mention a few. I’ve had chest xrays. an endoscopy ,cat scan of the chest and throat and extensive blood had the vents in my house professionally cameras up my nose and down my throat. I won’t even begin to list all the medications I’ve been on. Believe it or not, I’m quite healthy and active ( I’m in my mid seventies) I feel that if my cough is so bad, I should be dead by now…..but I’m still kicking and coughing.
"BALANCING THE BOOKS" is a character-driven suspense drama about an attractive woman who enlists the help of her two best friends to confront a traumatic experience she can no longer deny. Julia, divorced and successfully self-employed, seems to have it all - except the right guy in her life. Her friends urge her to "get back out there." But they don't yet know about Scott - a charming man with a secret background whose true colors paint a streak of pain and fear through Julia's life. When Scott's effect on Julia reaches the breaking point, she and her friends take matters into their own hands... and underestimate the consequences. The outcome forces all of them into a desperate situation. Everyone pays the price. Written by magnafilm