author - "Elsie Lincoln Benedict"

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