Testosterone is significantly correlated with aggression and competitive behaviour and is directly facilitated by the latter. There are two theories on the role of testosterone in aggression and competition.  The first one is the challenge hypothesis which states that testosterone would increase during puberty thus facilitating reproductive and competitive behaviour which would include aggression.  Thus it is the challenge of competition among males of the species that facilitates aggression and violence.  Studies conducted have found direct correlation between testosterone and dominance especially among the most violent criminals in prison who had the highest testosterone levels.  The same research also found fathers (those outside competitive environments) had the lowest testosterone levels compared to other males. 
Hey I’m 18 and have been lifting since I was in 7th grade and am now a senior. I’m interested In the dball cycle over the dianabol but have a few questions. The first question is do I need to take a test booster with it? Although it is recommended Ik if you mess with your body’s natural production at a young age it can screw up your production of it. My next question is about after you finish it. I’m seeing stuff about if the effects last and what I’m asking is if the dball effects of muscle growth wear off or do you lose the muscle you gained. What iv got from reading is if you just take the pills daily without test booster which is my option I’m really wanting to take, after my cycle runs out I won’t just lose muscle or stop growth will I? Thanks for you’re time and get back to me asap as I’m looking to order it soon
As the name suggests, the Endurance and Stamina Stack provides the body with enough stamina and strength to carry out heavy duty exercises. The Endurance and Stamina Stack works by increasing cardiovascular performance, strength, and speed. At the same time, the product helps the body to achieve lean muscle. The product achieves results fast so you can use it as an alternative to other normal steroids. However, to achieve the desired results without frustrations, make sure to combine the use of the Endurance and Stamina Stack together with a workout program and proper diet for a period of at least eight weeks and once you achieve results avoid relapsing and continue with follow up programs.