In addition, I advise most people not to run in concrete. I used to pound the pavement (literally) on a daily basis and I am pretty sure my knees are in worse shape for it.
If you want to run, find a nice track (that isn't asphalt) or a nice grassy or dirt trail. It's a bit dirtier, but it feels way better.
If you want to run, find a nice track (that isn't asphalt) or a nice grassy or dirt trail. It's a bit dirtier, but it feels way better.