ulbonado wrote:The idea that running over the long term is bad for your knees is just as much of a myth as the same claim about squatting.
A sudden extra level of stress on the knees, though, in combination with an existing relatively high level of stress (compared to somebody who doesn't run) may be a problem. All we're saying is, ease up the overall stress level till you're used to it.
His progress on SL5x5 is going to suffer if he leaves out the squats. What's going to suffer if he runs a bit less?
But I wouldn't give up running just on the idea that the pounding "wears out" your knees.
I think the bottom line with the human body is, use it or lose it.
This makes no sense to me. Exercise is good for you, yes, but that doesn't mean that infinite exercise is infinitely good for you - there's a limit.
I was running 3 to 5 times a week for a couple of years. I know that when I pushed it past a certain level (running twice a day, 4 or 5 days a week, for example), it began to hurt me. I was
overstressing my legs. Also, it's well known that running while tired makes you much more prone to stress and injury - your muscles are not able to give the same level of protection to your joints. If SL5x5 is tiring him, then the running schedule that normally causes him no harm may be a source of stress and injury.