Traditional Chinese medicine began with stones! https://en.wikipedia.org/wiki/Bian_stones
Hot stone therapy is an option for clients. Heat has long been used in Chinese medicine therapeutically and is known to ease muscle tension and in some cases pain. It helps increase blood flow to the affected area. It may also reduce muscle spasms and increase flexibility and range of motion. Hot stones placed upon the acupoints and meridians can be both stress relieving and very therapeutic.
Hot stones can be included with an acupuncture treatment or can be the main therapy on their own.