Hey im coming off chest surgery and am finally getting the go ahead to workout. I have gained 6 or so pounds..maybe more because ive lost alot of muscle. I couldent workout for a month and a half. I remember when I was 12 or so on the weekends and id just got a treadmill I decided to run all day for a couple of days too get in amazing shape and just to see how far I could push myself lol. After that I went to an hour or so every day. What kind of affect does this have? Good or bad?