h while; therefore try
to "camp out" for two or three hours each evening. If you are through
work at five o'clock, for instance, enjoy a picnic dinner in the
open, instead of a regular supper in the dining-room of your home. It is
daylight until almost eight o'clock during most of the summer, and this
plan would yield two or three hours of open-air life. Or take advantage
of part of this time, before supper, to go rowing, or swimming, to play
some game, such as tennis, or to do anything else that will occupy you
pleasantly for an hour or two in the open air. At least you can always
take a good walk. If you go to bed at a reasonable hour you can
probably rise early enough to permit a walk of one or two hours, or some
other open-air activity, before going to work. If your work is in an
office where you will be confined all day this advice is especially
important. When your office hours begin at eight or nine o'clock in
the morning you should imbibe as much fresh air as possible before work,
if only by walking part or all the way to your place of business. Be in
the open air as much as you can. Many people think they are too busy for
this. They make the plea of lack of time, but when illness appears
they have plenty of time to stay in bed. The open-air man or woman
"side-steps" sickness. Since superabundant vitality can be obtained
through open-air life, spend as much time as you can out-of-doors.
Cultivate the outdoor habit. It will increase your efficiency so that
you will do better work in less time.

CHAPTER X: Strengthening the Stomach

One of the first requirements in vitality building is strengthening the
stomach. Within the stomach we find the beginning of all vital blood-
making processes. Here is where the food first passes through the
changes essential to create the life-building fluid called the
blood. We therefore cannot exaggerate the importance of strength to
this important organ. When referring to a strong stomach, I do not mean
strength in the abdominal muscles lying immediately in front of the
stomach; I mean strength of the muscles within the walls of the stomach
itself, which, to a large extent, actually constitute the stomach.
These layers of muscular fibers which assist in carrying on important
parts of the digestive processes must be strong if digestion is to be
satisfactory in every way.

Now the work of strengthening the stomach does not, by any means,
consist wholly of