I am feeling my age.   Interestingly, through my 40's and even a bit into my 50's, I felt as if I were aging mentally and spiritually, but not so much physically.    But then I hit 60.   BAM!   The Zumba and similar cardio-dance classes that I enjoyed at the local gym caused pain in the ankles, knees, and hips.  Reluctantly, I gave up the "great-fun-but-more-impact-than-my-body-tolerated" classes.   I continued my yoga practice, and turned my attention to walking.   I thought of walking as my meditation-in-motion time.   I could walk for 2, 3, and sometimes even 5 miles with no problems other than, occasionally, needing a place to pee when there wasn't one to be found.   But then walking became a problem.   My left hip became more painful with each passing month.   I felt betrayed by my body.   I had thought that if I just stayed active and took care of myself my body...