I did my first half marathon two weeks ago. I had done a few long runs and had properly trained over quite a while.....anyway the run was slightly more 'off road' than we thought and my knees took a real battering. I have never had bad knees before
. So two weeks on and I still have a Achey pain (more annoying discomfort). I tried a 4 mile slow run and was ok whilst running but now it's sore again! Feels like I have bashed my knee really hard on something. So my question is should I completely rest it? I am keen to keep my fitness up, maybe kettlebells? 