bird wrote:gregorpatsch wrote:http://well.blogs.nytimes.com/2009/08/11/phys-ed-can-running-actually-help-your-knees/
I remember seeing this. As my 82 year old father-in-law says "Use it or lose it!"
I generally agree, but one should be careful how you "use it."
I've seen many people out pounding their knees and most of them could have just walked fast with very little impact and the same results. Walking up hills is great and take a pack if you need it to be harder. When I use a pack I take big water bottles and then dump it all at the top.