Running is the best exercise to increase the breathing and staying power, as the muscles used in propelling the runner's body do not interfere with those of respiration. The runner can hold his breath, with the chest fully extended, for a long time, while the rower, for instance, must fill his lungs at each stroke,—from thirty to forty times a minute. But, with practice, the rower can keep his chest well filled without letting out his resident air; he lets out a small quantity only, and fills this up again, so as to keep the full complement of air necessary for the blood without changing a great quantity at each breath.
As the arm increases in girth from using the dumb-bell, the chest of the runner and oarsman accustoms itself to the larger demands made upon it, both for breathing and holding the wind. It must be remembered that many persons, though muscular and athletic, can never learn to do anything that demands rapid respiration. They can put forth their strength slowly; but they always get "winded" in a rapid and vigorous test. Persons, with this peculiarity, usually try to cure themselves by muscular exertion; but this is wrong. What they need is intelligent and long-continued exercise of various kinds for the breathing organs.
"Indigestion, sleeplessness, nervous indecision,
