vousness is not only a source of great annoyance, both to
one's self and to others, but is a menace to the general health.

The first step toward securing relief from such a condition is the removal
of the cause. The habits should be inquired into and excesses of all kinds
discontinued. In some instances it may be necessary to _have the eyes
__examined_ and glasses fitted by a competent oculist.(109) The nervous
energy should be carefully economized and the habit of self-control
diligently cultivated. Special exercises that have for their purpose the
equalizing of the circulation and the strengthening of the blood vessels
of the neck and the brain also have beneficial effects.

*Nervous Overstrain.*--Both mental and physical overwork tends to weaken
the nervous system and to produce nervousness. Where hard mental work is
long continued, or where it is carried on under excitement, a tense
nervous condition is developed which is decidedly weakening in its
effects. The causes which lead to such a condition, and in fact overwork
of all kinds, should if possible be avoided. Where this is not possible,
and in many cases it is not, the period of overwork should be followed by
one of rest, recreation, and plenty of sleep. To the overworked in body or
in mind, nothing is more important from a hygienic, as well as moral,
standpoint, than the right use of the _one rest day in seven_. The best
interests of our modern civilization _require_ that the Sabbath be kept as
a quiet, rest-giving day.

*Disturbed Circulation of the Brain.*--Nervousness not infrequently is
accompanied by an increase in the circulation of the brain and disappears
when this condition is relieved. Though mental work and excitement tend
naturally to increase the circulation in the brain, this should subside
with rest and relief from excitement. When there is a tendency for this
condition to become permanent, effort should be made looking for relief.
Increasing the circulation in the lower extremities by hot or cold foot
baths, or by much walking, is found to be most beneficial. Special
exercises of the muscles of the neck are also recommended as a means of
relieving this condition.(110)

*Hygienic Value of Work.*--Within reasonable limits, both mental and
physical work are conducive to the vigor of the nervous system. Through
work the energies of the body find their natural outlet, and this prevents
dissipation and the formation of bad habits. Even hard work d