Move well. Live strong. Age Strong. As you age you lose muscle mass and mobility. Science has shown that Type 1 Muscle Fibers (slow twitch fibers) remain largely unchanged throughout your life. However, Type 2 Muscle Fibers (quick twitch fibers) go dormant when you stop training and moving like an athlete. Let the Benson Sports Training Age Strong Program safely bring your Type 2 Muscle fibers out of hibernation. The Type 2 Muscle Fibers are what make you feel younger, look younger and perform younger