well i went 5 extra laps today it felt good but the joint below my left knee isnt liking it. i was talkin to this guy down the street who used to jog all the time on the railroad tracks. im 36 & was askin him if his knees ever bothered him when he jogged. he said he blew both of them out--no wonder jogging every day on the railroad trax . my dad also said this man had an old football injury which he didnt say anything about. heres the kicker--he jogged every day & had a heart attack after that he sat around on his porch & got fat he couldve atleast walked theres other people i know who have had heart attax & battled cancer & they walk like crazy. doug (thats his name) just couldnt believe im 36 & my knees are botherin me but gosh my daughter did cheerleading & the girls that were the tumblers were havin major knee problems be4 high school i severely need an elliptical machine i love em! i will talk to t about it he wont be surprised cuz he knows im the type where i do everything to the extreme