just started training I am very over weight 217lbs 5'7" doing weights is ok quite good at fast walk on treadmill and not bad on stryder never really get out of breath but when I try to run on treadmill it really hurts my legs is it just down to the fact I am so over weight or is there some way to stop the pain I used to run when I was younger was quite good at short distance won a few local comps so enjoy running and miss not doing it