I am more than forty years old practicing boxing or sparring?

Boxing, in my case, I am now 45 years old, I have been practicing boxing, fitness effect is very good, but I am their own training, do not participate in competitions, but self-defense is still possible, Scattergoods need to press the legs, good flexibility, high requirements, boxing strength training I have not been engaged, but explosive force from the overall power, as long as the right practice, the power is absolutely very good, and the amount of training adjusted by yourself, not subject to the limitations of space and time. Boxing is a good way to fitness.