thanks Thomas Frayne for providing this video.... while there was undoubtedly some good info in this video, it reminded me of my thoughts on the 150 minutes of weekly activity that is generally recommended.  I give some thoughts on this, which I've done before as well as his comments on the "myth" that running ruins knees.

Lieberman video:
https://youtu.be/LbgukiJy6hY

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