Not being able to feel pain can really be useful .

I remember the first time I ran into this was when I was in 5th grade. I fell off the swing set and injured my wrist. The teacher was really worried and wanted me to go to the nurse, but since I felt fine the teacher let me return to class. Turned out my wrist was broken. Mom wasn't to happy about that.

If you're worried about over using you're ankle you should talk to someone about it. After a few more incidents like the one I described above, both my mother and step-mother started to keep an eye on how I'm treating my body. It can be annoying at times, but it is much safer than if I were to simply guess at what was too much for my body.