The muscles of the lower limbs include those of the hips down to the extremity of the toes. Persons in sedentary occupations MUST exercise these muscles under penalty of having them become feeble, flabby and unreliable. With such persons, as age creeps on, the steps become uncertain and “wobbly,” presenting the appearance of extreme age even before middle age has been reached. Those who walk much should take systematic exercise for the benefit of the lower muscles, because the occupation requiring the use of the lower muscles fixes them in a groove or habit not conducive to control. That is, the muscles become set in a certain direction, whereas, it is essential to enable them to move freely and easily in any direction. The best exercises for standing, sitting, and walking are those directed by the will power or energy acting directly upon all the muscles and maintaining an equilibrium so that gradual development of the entire body will be reached. This is accomplished by what is known as “flexible action,” in the lines of changing curves which distinguishes the beauty and grace of motion from mere strength. There are three phases in this natural development: Angular, circular and spiral. The human form poised squarely on both feet is the spiral, the head a convexed curve, the body a concave curve, and the legs a convexed curve, like a wave line. To preserve this spiral line of changing curves, the weight is always thrown against the strong side so as to develop the weak side and maintain an equilibrium. Standing should be principally upon the balls of the feet, and the exercise should be to incline the body to and from the opposite curves. There should be no slouching at the hips. In walking, stand erect, feet together, abdomen in, chest up, and shoulders firm. Then advance the thigh and let the leg hang free from the knee down. Straighten the leg and plant the ball of the foot in advance with the toes straight in front, and so on alternately with each foot, carrying the head erect with the chin drawn well in. To sit down let the muscles come into play and not the bones, as it is through the muscles only that gracefulness can be acquired. To rise from a sitting to a standing position, all the muscles should work in unison and the body arise at once to a standing position. To kneel the same play of the general muscles should be applied. A cow or a camel is not very graceful when performing the act of kneeling preparatory to lying down, but that is because they are animals and not human. The mere act of touching the hat in salutation is graceful or awkward as the muscles are trained. A graceful sweeping curve of the arm, a gentle bend of the muscles of the neck, inclining to a curved bow, and the salutation is graceful. Otherwise the motion is raw and provocative of an idea of ill breeding.