I've got my RSC coming up soon, and i'm attempting to get fit again. I'm 22, about 11 stone and seriously unfit - not fat, infact I think i'm a little underweight, but seriously unfit. When I was at school i used to play five a side at least three times a week, which kept me in good shape. Since then (5 years ago) I've had hardly any reason to run anywhere. Upper body strength is not a worry, as I have done weights on and off since i left school. I quit smoking about 4 months ago (less than 10 a day) and have knocked the pub on the head for the time being. The problem is, since I've started to go out jogging I get out of breath after maybe 6 or seven minutes running. Every day I go out I do notice an improvement though, which is encouraging. My legs don't get tired - I walk about 5 miles a day, which has got to count for something - it's just.........I cant f*ckin breathe, which I'm sure you'll agree is a problem. Like I said, it gets better every time I go out, and I'm going to start going out twice a day, but I'm wondering what type of running I should be doing to improve - is it my cardio thats goosed? Well, to improve my lung capacity i suppose. Im planning on incorporating fartlek running into my training after what i've read here, but any other info would be appreciated.