The older you get, the more important strength, agility, power, and lean mass become. This isn't how most people approach old age. They expect strength and all the other trappings of physical capacity to degenerate, and so they do. It's what happens all around us, every day. Seniors are feeble, right? (This Mark's Daily Apple article was written by Mark Sisson, and is narrated by Tina Leaman)