Their excess of energy sometimes gives them the appearance of "fidgeting," but it is an easy, graceful fidget and not as disturbing as that of other types.
Keen Eye and Ear Senses
¶ Quick eyes and keen ears are characteristic of the Thoracics. The millions of stimuli—the sounds, sights and smells impinging every waking moment upon the human consciousness—affect him more quickly and more intensely than any other type. The acuteness of all our senses depends, to a far greater extent than we have hitherto supposed, upon proper heart and lung action.
Take long, deep breaths for five minutes in the open air while walking rapidly enough to make your heart pound, and see how much keener your senses are at the end of that time.
The Thoracic is chronically in this condition because his heart and lungs are going at top speed habitually and naturally all his life.
Susceptible to Heat
¶ Because bodily temperature varies according to the amount of blood and the rapidity of its circulation, this type is always warmer than others. He is extremely susceptible to heat, suffers keenly in warm rooms or warm weather and wears fewer wraps in winter. The majority of bathers at the beaches in summer are largely of this type.
The High-Strung
¶ Nerves as taut as a violin string—due to his acute physical senses and his thin, sensitive skin—plus his instantaneous quickness make the Thoracic what is known as "high-strung."