Have some pain at my left kneecap which came after tempo-run last friday. After the 5 k-race last weekend, I ran 3 days easy and took a day off, then that tempo-run. The only reason I can imagine despite I am old (-: is that I ran parts of the race and the tempo-run downhill. Knee hurts only when I bend the knee, but it hurted every step of the long run yesterday. Don´t think it will be a big thing, but I will have to respect it this week.