Originally Posted by
prj71
Running is the worse thing you can do. It's a high impact activity. You're knee and other joints will haunt you into your older age if you become an avid runner.
My parents are 67 and 64, both have been runners since their 20s. Both have no issues with their knees or any other joint. Running does have a higher risk of injury than cycling, but it isn't correct to say it WILL wreck your joints. Furthermore, to a certain extent, the fact that running is high impact is a good thing. It helps with bone density.