Emotions and Well-Being, Ancient Evidence

Here's a little gem I discovered in some reading material to provide ancient support on the relationship between nerves, muscles, muscle response and health. This is useful information in connection with the "modern" practice in holistic circles using applied kinesiology/muscle testing.

Many aspects of modern medicine may not be as modern as some think. In fact, a number of today's common medical practices were already in place centuries ago in some lands. Consider, for example, the history of medicine in medieval times in the Middle East.
... Avicenna, a leader in the medical field, hailed from Bukhara, in modern Uzbekistan. He became one of the great physicians, philosophers, astronomers and mathematicians of the 11th century. Avicenna wrote an encyclopedia, The Canon of Medicine, which covered the whole range of known medical knowledge.
Avicenna stated in his Canon that tuberculosis is contagious, that disease can spread through water and soil, that emotions affect physical well-being, and that nerves transmit both pain and impulses for muscle contraction.
So, the art of muscle testing, applied kinesiology, is based on historical writings and discoveries of medical men from early times.