Sports do not only help in building your mind and body, but they teach you a number of things with regards to leadership, friendship and people in general.
Teamwork is the ability to work together toward a common vision. The ability to direct individual accomplishments toward organisational objectives. It is the fuel that allows common people to attain uncommon results.
Brazilian Jiu Jitsu is a sport you could learn at any age -- but, like anything else, becoming good at it will take time, commitment and discipline.