Tried to run really slow although I now suspect not slow enough. Did 8k in 1 hour but had a pain in my right leg as soon as I slowed down for cool down walk. Painful when I walk so limping around. Worse when I go up or downstairs. Using RICE and hoping I can get back on track with working towards 10k. Have downloaded MyAsics app and planning to really slow down next time I am able to run.