Above all, learn to breathe correctly.

A few well-designed movements, properly performed in a balanced sequence, are worth hours of doing sloppy calisthenics or forced contortion.

If your spine is inflexibly stiff at 30, you are old. IF it is completely flexible at 60, you are young.

Physical fitness is the first requisite of happiness. In order to achieve happiness, it is imperative to gain mastery of your body. If at the age of 30 you are stiff and out of shape, you are old. If at 60 you are supple and strong then you are young.

When all your muscles are properly developed, you will, as a matter of course, perform your work with minimum effort and maximum pleasure.

Never slouch as doing so compresses the lungs, overcrowds other vital organs, rounds the back, and throws you off balance.

Physical fitness is the first requisite of happiness. Our interpretation of physical fitness is the attainment and maintenance of a uniformly developed body with a sound mind fully capable of naturally, easily, and satisfactorily performing our many and varied daily tasks with spontaneous zest and pleasure.