6. Accentuate the extension of the muscles of the body in all exercises possible.

The kneading of the face helps the parts as well as being important in itself. If we rub the muscles while whining we tend to confirm the condition in the parts at the time. Thus we may develop whines and frowns. It is very important, therefore, that there should be a cheery smile on the face during the manipulation, if the looks are to be improved by the exercise.

In kneading the stomach and the diaphragm if we have a full chest, as in laughter, the manipulation will produce a far better effect upon the diaphragm than if we have little breath.

In practicing an exercise, therefore, it is not only necessary to study which part most needs development or which muscle is weak, but it is just as necessary to notice which muscles need extension.

7. Practice harmoniously.

We should exercise all parts of the body in a similar way. If we exercise, for example, the action of the feet it is well also to practice rotary action of the arms, or at any rate, of the head.

We should see to it that when we practice one part of the body the corresponding part of the body should be equally exercised. We should not give more exercise to one side or part, except when there are congested conditions. We should not give much more to the arms than to the legs unless we have to walk a great deal.

8. Practice in such a way that every movement affects the central parts of the body.

Hence the program takes first the expansion of the chest and breathing and chuckling, also the transverse action of the torso. We should be cautious about performing violent exercises with the arms, or even with the feet, without simultaneous expansion of the torso because this is a central action which is conditional to all proper action of the limbs. Contraction of the torso while working upon the limbs may draw vitality from the vital organs.

Gymnasts, as a class, die early because they are always performing feats. Other dangers are found in the gymnasium, such as practicing exercises perfunctorily, using quick jerks and too heavy and labored movements which affect only the heavy muscles. The absence of rhythm and co-ordination, the presence of too antagonistic movements, the desire to make a show, too much work upon the superficial muscles are also frequent faults.