I used to run a mile a day to try to build up my speed and endurance to run longer distances, but something would always hurt. If it wasn't my ankles, it was my knees or my hips, or my feet, etc. I bought padding for my shoes, but they didn't help very much. I'm only 15, so I doubt it's any type of bone disease. I am currently in the middle of a growth spurt, would that have anything to do with it? Should I only run every certain amount of time?