I am a gym rat, through and through. I am all in for the endorphin rush, the building of muscle mass and bone density, especially at my age. And, I thrive on the competition within myself as I strive to be better, faster, stronger. Typically, I go about my workout quietly, albeit sweaty, just minding my own business. In my mind, I am keeping up with the 40-somethings at the gym…until I realized, in fact, I am not. The realization …