It’s very easy to stop taking care of your body when you no longer have to maintain a pro athlete’s shape. These players, however, did not use retirement as an excuse to let themselves go.
Prior to his life as an NBA superstar, Robinson had a stint in the U.S. Navy. This meant that he was already fit when he embarked on a pro basketball career; his regimented, disciplined approach held him in good stead in terms of his basketball and the fitness side of things. Even now that he’s in his 50s, The Admiral probably approaches training sessions like he did in his navy days. Consequently, he looks to be in great shape and will probably remain so for years, possibly decades to come.