hi everyone from a new joiner... I took up jogging two months ago in order to improve my fitness for other sports rather than as an end in itself. I do a hilly 3 mile jog twice or three times a week and one 5 miler at the weekend. When I started I could barely manage two miles, so at least I've worked up the distance - but I don't get any faster - I'm stuck at 28 minutes on the 3 miler. May sound a dumb question, but what's the best way ahead - trying to lengthen stride or increase the frequency of the step?