This is a really great broadcast about the benefits of movement and working muscles to improve the aging process.  She also discusses how simply standing up is very helpful for overall health.   There is a great commentary on stretching vs dynamic stretching.   Joseph Pilates definitely had things right with dynamic stretching.  Joseph Pilates also had it right when he made squats an important part of his Pilates regimen.  The person being interviewed is a lover of running and she indicates that for 75% of runners they will have at least one injury a year.   She talks about walking as the perfect exercise for humans increasing lifespan.   This is a great commentary on aging in the best method possible!