The tongue has many relationships and connections in the body, both to the meridians and the internal organs. It is therefore very useful and important during inspection for confirming TCM diagnosis. When I look at your tongue, I am searching for strong visual indicators of your overall harmony or disharmony.
The tongue has a special relationship with the Heart, in that the Heart opens to the tongue. The tongue is said to be an “offshoot” of the Heart, or “flowers” into the Heart.
The normal tongue in Traditional Chinese Medicine has a light red or pinkish body with a thin white coating.