Traditional Chinese Medicine (TCM) believes that the condition of the Heart is expressed on the tongue and in the complexion of the face. With its many blood vessels, the face readily shows the condition of the heart. A rosy face, pink tongue, and sparkling eyes show that the heart is functioning well and the person’s spirit is strong. A white face and pale tongue suggest the heart is not functioning well. Stagnation of the Heart energy can be represented in a face that is blue and a dark purple tongue.
On the psychological level, the Heart is also responsible for a person’s appropriate interactions in time and place. It allows for manners and propriety. On the emotional level, Heart energy that is in balance is expressed as the positive virtues of love and compassion; out of balance, it is expressed as over-excitation and frantic activity.