What she needs instead of exercise or medicines is rest; as much rest and food as she can contentedly stand. The only exercise such a condition calls for is deep breathing and this more to furnish fresh blood which the full lungs give, than for the exercise itself. If we could conveniently get fresh air into the lungs by some method other than breathing it, it would be better still, for even the effort of deep breathing calls for some use of the nervous force, and the least possible disturbance of this force, the quicker will the girl or woman recover her full nervous strength. If you have exercised beyond the power of the nervous system to send full impulses to the skin so that it will pour out its poisons, some of this poison remains in the body and sets up a condition known as auto-intoxication, which only means self-poisoning. All kinds of nervous affections arise from this state. The same conditions are brought about by the poisons of the liver, if the delicate nerves of this big sewer of the body are too tired to open up all the little ducts and channels and let out the poisons which the liver has taken up from the blood in your body. And so we might go on into more physiology, showing you that much of the nervousness among girls comes from over-exercise, instead of under-exercise. Probably more of the trouble arises from exercising at wrong times; at times when the nervous organization has all it can do to regulate sex growth and development of the girl. At this time to pull out a lot of nervous power to make muscles work and grow big, must result in some nervous organ being deprived of its needed nerve cell assistance. In these facts lies the cause for so many nervous wrecks in young women and wives. Nature gives the nervous system of all growing girls constant and concentrating work to do. It has to take care of all the new organs of secretions, see that the breasts are fully supplied with cells ready to do their work when motherhood approaches, fit its tiny but powerful nerve endings to the womb and ovaries, develop the brain and instincts along proper and healthful lines, furnish power to the million cells of the scalp and skin, watch that the stomach pours out a proper amount of digestive fluid at a time when the girl has a craving for strange “eatables” such as slate pencils or gum arabic. The hard and enduring efforts of the nervous system to keep the girl well balanced in her thoughts all the time she is undergoing these necessary changes, should never be overlooked. No girl between fourteen and twenty years of age should ever train for physical contests or any form of athletic competition. A girl should train for her future work――motherhood――and for this wonderful and glorious contest for bringing onto the earth the best possible men and women, she must have the highest form of nervous development, with all that this implies.