Practitioners of reflexology describe reflexology charts as pictures of reflexes on the feet, hands or ears that correspond to organs, bones and muscles in the body, according to Modern Institute of Reflexology. Practitioners believe that applying pressure to these points affects organs and biological processes, states WebMD.
Dr. William Fitzgerald, the first practitioner of reflexology in the United States, believed there were 10 zones running down the length of the human body, explains WebMD. He applied pressure to the zones on the feet to stimulate the organs in the corresponding zone. In the 1930s, physical therapist Eunice D. Ingham adapted Fitzgerald's ideas and designed the foot reflexology chart that practitioners currently use.
There is no scientifically reliable evidence to explain how reflexology might work, states WebMD. Some research shows that reflexology may be temporarily effective for cancer-related pain, but other research shows the opposite. There is insufficient evidence that reflexology is effective for chemotherapy, irritable bowel syndrome, migraines, overactive bladder and disease diagnosis.