i jog at least 4 miles everyday and walk another 4-8 miles everyday depending on work & kickboxing & weight lifting schedules I am always sore and hurting. NO PAIN NO GAIN!!!!!! but I dont think I'm hurting tot he point where i am causing muscle damage or anything in my opinion

ALSO FIND THE "UBC" PROGRAM IN YOUR AREA. it is one helluva workout. I am on a paintball team and we all do it + all my buddies who enduro race & motocross do it too. it is really fun and really trims yer thighs and stomach and legs. It just really gets you in shape a hardcore workout it is! I sleep like a baby everynight afterwards.

http://www.ultimatebodyshaping.com/ubc.php?s1=s1home&page=home2

the one in my town is absolutely awesome + i have met so many hotties!!!!!!!! lol