Short 3.5 minute clip from one of my diabetic research professor hero's on the importance of muscle strength as we age. This is a short section of one of his longer presentations. Not only is he very smart and stays up on current research (some of it he does in his own lab), but he is humble in his approach to what he think he knows.

https://www.youtube.com/watch?v=j7cglb1nzvU