i dont know, man, but the jarring i guess from the running is chronically hurting my knees. i cannot even do it anymore. my heart, lungs, and body is saying "GO!" but my knees are screaming, "STOP!!!!"
i am ending up doing stairmaster for an hour now every day. the stairmaster does not hurt my knees at all.
i am ending up doing stairmaster for an hour now every day. the stairmaster does not hurt my knees at all.