^ thanks! I'm 31, and about 2 months ago I tried adding too much distance too quickly, and ended up getting injured. I was adding like 2-3 miles per week (going from 3 mile runs to over 7 in under 2 weeks). I've definitely learned my lesson and I'm adding mileage much slower now. My other runs during the week are a lot shorter, usually around 5 miles, which I feel I can do relatively easily now.