ndividuals in whom the circulatory system (heart, arteries and blood vessels) and the respiratory system (lungs, nose and chest) are more highly developed than any other systems, have been named the Thoracics.
¶ This name comes from the fact that the heart and lungs (which constitute the most important organs of these two closely-allied systems) are housed in the thorax—that little room made by your ribs for the protection of these vital organs.
Physical Resilience
¶ A general elasticity of structure, a suggestion of sinews and physical resilience characterizes this type.
The Florid-Faced, High-Chested Individual
¶ What is known as a "red face," when accompanied by a high chest, always signifies large thoracic tendencies. The high color which in an adult comes and goes is a sure indication of a well developed circulatory system, since high color is caused by the rapid pumping of blood to the tiny blood vessels of the face.
People with little blood, weak hearts or deficient circulation are not florid and must be much overheated or excited to show vivid color in their cheeks.
Betray Their Feelings
¶ On the other hand, the slightest displeasure, enjoyment, surprise or exertion brings the blood rushing to the face and neck of him who has a large, well-developed blood-system. How many times you have heard such a one say: "I am so embarrassed! I flush at every little thing! How I envy the rest of you who come in from a long walk looking so cool!"