Boxing the Sport and Training Regimens Are Dumbed Down in Comparison to Less Dangerous Sports like Basketball. Why is open unstructured sparring still a big emphasis in most Boxing gyms. The best athletes and even military personnel drill. A soldier does not go to war and get shot at to prepare for war. LeBron James and Stephen Curry routinely drill to prepare for basketball games. As does athletes in every major sport. Mixed Martial Artist have even begun to adapt, sparring hard maybe once weekly.