Okay. I'm way out of shape, haven't really done anything like running or cardio in a few years. I'm not fat or anything, I'm 5'11" and 175-180lbs, but that's certainly not muscle. I've decided I feel really out of shape and I'm going to start doing some jogging/running. I have a "track" in my backyard that's square, it takes 26 laps to make one mile. Today I started with the goal of trying to jog 1/2 mile or 13 laps. I started going and did more of a solid run, not a sprint, but a run. I got 11 laps into it and felt like my chest was on fire so I walked another 11 laps and called it a quits for today. My question is, what should my routine be. Give it a break tomorrow and then try the same again Monday, or maybe walk a mile around the track tomorrow? How many times a week should I do this? My goal isn't to look like a CK underwear model or anything, although I wouldn't complain, I just want to feel better about myself and not die after only a few laps. Any simple suggestions you guys can make would be great, thanks.