A good friend sent me this hand diagram as a microsystem picture. It simply shows various organs in their corresponding position in our palm. You can massage the area of your hand (palm) to improve the function of a particular organ shown. Other organ issues can be smoother by massaging the particular area of your palm that corresponds to it, too.

For example, if you have cramps in the begining of your menstrual cycle, you may want to massage the area below your 4th finger in your palm (here is the uterus!), as indicated in the diagram.