=The Upper Arm.=--The biceps is the large front muscle of the upper arm. It bends the arm and brings the hand toward the shoulder. A large biceps is the envy of many young men who regard it as the criterion of physical strength, and who often develop it out of all proportion to the rest of the body. It is, however, an important muscle, and should receive due consideration. Most persons will find that one arm or one leg or one side is weaker than the other. Give to the weaker member much the larger practice until the equilibrium is restored, then exercise them equally. With dumb-bells, flat-irons, window-weights, or other objects in hand, slowly bend the arm until the hand almost touches the shoulder, then slowly lower to position. Repeat ten to twenty times. Gradually increase the weight and the number of lifts. If pulley-weights are used, stand so that the outstretched hand barely reaches the handle of the rope. With palms upward, draw the hand toward the shoulder. Slowly relax and repeat. When away from home, and having no access to anything that may serve as apparatus, in this, as in many exercises, one arm may serve as lever and the other as weight. With the right hand, grasp firmly the wrist of the left. Press down vigorously with the left, but use enough force to overcome the resistance, and with the right raise it to the shoulder. After several repetitions, reverse the hands. Some persons ignore the use of all apparatus, preferring what is known as free gymnastics. This extreme is greatly to be preferred to that of using heavy, and often dangerous, appliances. In many exercises, the weight of the body or its parts affords sufficient resistance to develop the muscles. In other cases, the imagination supplies the want of resistance, and, by due concentration of will, making one set of muscles pull against another, the muscles may be given as much work as though actual weight were present. To children and young persons, light and suitable apparatus will furnish added stimulus and interest. Climbing a ladder or rope, hand over hand, or lifting the body so that the chin may touch a horizontal bar overhead, are exercises better suited to later stages of biceps development. To be able to lift the body to the bar with one hand, three to five times, should satisfy any reasonable ambition. The triceps are the back and inside muscles of the upper arm, and contribute much to the shapeliness as well as usefulness of that member. Instead of stopping at the shoulder, as in the biceps exercises, push the dumb-bells high overhead. Any exercise of pushing with the arms is of advantage. Stand back about two feet from the door, grasp the sides of the frame a trifle higher than the shoulders, and, rising on the toes, with head erect, thrust the body forward. Press back until the body again assumes an erect attitude, and repeat ten to twenty times.