All this talk of knee pain got me curious:
Interesting read.
Apparently marathon runners actually get bigger knees over time.
The effects of exercise on human articular cartilage
The effects of exercise on articular hyaline articular cartilage have traditionally been examined in animal models, but until recently little information has been available on human cartilage. Magnetic resonance imaging now permits cartilage morphology ...
www.ncbi.nlm.nih.gov
Interesting read.
Apparently marathon runners actually get bigger knees over time.