J.K. Simmons stunned ... of a healthy kick Simmons has been on since 2009. "After the second and final time that I got hugely fat in my life and when I lost that weight six or seven years ago ...

Unless, that is, you put in the effort to get ripped in your 60s like J.K. Simmons has done ... That's three weight workouts per week, plus devoting at least one day to rejuvenation activities ...