Sounds confusing doesn't it? Well, I watched this clever video from Runners World that helped me out. It's super easy to test what kind of foot you have. I tried it too!
NORMAL -- Your foot evenly distributes the force of impact when you hit the ground and you push off evenly from the front of the foot.
- Overpronators: more wear and tear on inner side of soles
- Underpronators: more wear and tear on outer side of soles
- Normal pronators: wear and tear even on soles