I'm quite young, fit and active, enjoy swimming, cycling etc. I'm not a natural runner, but I've been giving it a go and have, over the last couple of months, slowly built up to being able to run for 1 hour non-stop on a treadmill. This is quite an achievement for me as, in the past, I've had problems with shin splits, getting stitches, or just finding it really hard work. My problem now is that I have developed pains in my knees and lower back.
I really do want to keep at it and get better and fitter and maybe even enter the odd race, but I'm wondering if my body is telling me to just give up.
I'm running at a pretty slow speed (8km per hour) and I wear air max running shoes, which are really comfortable. Is there anything I can do to prevent these pains I'm getting?
Any advice would be appreciated