How to Analyze People on Sight

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tired or sorrowful and note the changes wrought by your emotions in your
facial muscles.

Constant repetition of the same kinds of thoughts or emotions finally
makes permanent changes in that part of the body which is
physiologically related to these mental processes.


The Evolution of the Jaw

The jaw is a good illustration of this alliance between the mind and
the body. Its muscles and bones are so closely allied to the pugnacity
instinct center in the brain that the slightest thought of combat causes
the jaw muscles to stiffen. Let the thought of any actual physical
encounter go through your mind and your jaw bone will automatically move
upward and outward.