These exercises may be extended indefinitely, and you may exercise your ingenuity in supplying additional one under this head. The main idea is that the exercise shall consist of some trivial, familiar, momentous muscular movement, and that the attention must be kept firmly fixed upon the moving part of the body. Your attention will revolt at the slavery enforced upon it, and will endeavor in every possible way to escape its thralldom. This is where the training comes in, and you must insist that your attention does its work, from beginning to end, and not wander away to more congenial scenes or occupations. Think of yourself as a strict schoolmaster, and of your attention as a playful, fun loving boy who tires of looking at his book and wishes to steal sly glances out of the window and door at the more attractive sights on the outside. Your business is to keep the boy at his book, knowing that it will be better for him, although he cannot see it just that way now. Before long, you will notice that you have much better control over your muscular movements, carriage and demeanor, and will also observe an increased power of attention and concentering in your everyday affairs, which will be of considerable advantage to you.