| The answer might be a mortifying surprise. In a recent study of 4,659 masters athletes who’d qualified for the National Senior Games (a competition that happens every other year and was once known as the Senior Olympics), most participants’ strength and aerobic conditioning were high and their overall health enviable. Few had experienced heart disease, cancer, high blood pressure, diabetes or other chronic conditions, and fewer than 10 percent had needed a joint replacement. And now, you can see how you measure up. Completing these at-home self-checks should give you a sense of how fit you are today — and what you need to do to improve: | 
