The thing is there are many ethnicity's throughout prisons of the world. Lets use American -Mexicans as an example. Boxing is in their blood. Many have been around gyms from an early age. One of the biggest hurdles for cons when they get out is a lack of support system. Which is why many fall back into bad habits from those they associate with. If they had a program that developed them while inside and then continued to assist them once they were released they may be able to continue to keep focused and dedicated and away from temptation. It really comes down to the individual to want to change and make something better with their lives.