Yadira - thank you for responding, I ran a little around Christmas while we were on vacation and did really well, we were in Florida and it was very flat. I just started again to add it to my routine in an effort to lean out my lower body a little more. Our turrain is hilly and rocky here at home, dirt road (boonies). I may have done too much for the first time, I am a bit sore today - my shins, ankles, knees, quads and midsection are all pretty sore. But I only ran for 45 minutes at a comfortable pace. I did not feel this way last time and like I said my quads are swollen, or they were yesterday - I figured I would start at twice a week running for 4 miles but I may have to rethink that - how did any of you start?