In his 1945 book Return to Life Through Contrology, Joe claimed his method:

Develops not only the muscles of the body, suppleness of the limbs, and functioning of vital organs and endocrine glands; it also clarifies the mind and develops the will.
Develops the body uniformly, corrects wrong postures, restores physical vitality, invigorates the mind, and elevates the spirit.
Helps you acquire a natural rhythm and coordination associated with all your subconscious activities, like that observed in pets and wild animals.
Gives you suppleness, natural grace, and skill that will be unmistakably reflected in the way you walk, the way you play, and in the way you work.
Develops minor muscles to naturally help develop large muscles.
Gives you complete control of your body.
Give you limber and stretched muscles and ligaments so that your body will be as supple as that of a cat.