Reflexology
This is the belief that certain spots on your hands and feet are linked to other body parts, including muscles, organs, bones, and more.
Basically, your body is divided into ten energy zones that run from your head to your toes. If you can imagine a gingerbread man cut into ten peices lenghtwise..that is about how it is. Every part of your body falls into one of these zones, and every zone ends at your feet.
Reflexologists are trained to apply pressure to these areas, which in turn relax the area of the body that is triggered by that pressure point.
The only half way decent charts that I could find on this subject was at this site:
http://www.reflexology-research.com/index.html
Please visit them for more reading material on this subject. They have a huge amount of material.