e 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!"

The Man of Great Chest Expansion

The largest part of this man's body is around the chest. (See Chart 3)
His chest is high for the reason that he has larger lungs than the
average.

Advantages of a High Chest

The man of unusual chest-expansion has one great physical asset. The
person who breathes deeply has a decided advantage over the man who
breathes deficiently. The lungs form the bellows or air-supply for the
body's engine, the heart, and with a deficient supply of air the heart
does deficient work. Efficient breathing is easy only to the man of
large lungs, and only the high chested have large lungs.

Long-Waisted People

A long waist is another thoracic sign, for it is a natural result of
the extra house-room required by the large lungs and heart. It is easily
detected in both men and women. (See Chart 3)

If you are a close observer you have noticed that some people appear to
have a waist line much lower than others; that the belt line dividing
the upper part of the body from the lower is proportionately much nearer
the floo