If a woman has no functional derangement, walking and carriage riding are invaluable. _She cannot be too much in the out-door air._ Properly clothed, brisk walking brings into action nearly every muscle, and is invigorating to every function. American women, as a rule, walk too little. Wearing common sense shoes, having the arms free, the dress short and loose, one can accustom herself to walking long distances with positive benefit. _Light gardening_ can not be too highly recommended. It has the advantage of being _out doors_. It gives postures that bring into action the unused muscles of the trunk and abdomen. Coming in contact with the earth carries off any excess of electricity. Besides, the result, either in a supply of fresh vegetables for the table, or in floral decorations, are always satisfactory. My own experience proves that getting out and working in the ground is a cure-all for _ennui_, indigestion, torpid liver, anxiety, despondency; indeed, any slight physical derangement or mental disturbance. Possessing no garden to cultivate, lying flat upon the ground without blanket or pillow answers a good purpose. More rest can be obtained in five minutes than in five hours upon lounge or bed in the house. Although this is contrary to all tradition and teaching, many have proved its value. What is the object to be gained by exercise in pregnancy? Evidently absorption, nutrition and excretion. All the functions must be kept to a normal standard, so that the processes of assimilation and waste can be perfectly performed. The involuntary muscles of respiration must be educated. Those required in parturition must be developed and strengthened. There are the muscles of the abdomen, pelvis, perineum and groin, also some of the muscles of the trunk. _Full and deep breathing_ is not only necessary to perfectly oxygenate the blood and by the attendant motion to promote digestion, but it makes room for the fetus as well. It expands the wall of the abdomen and chest, and strengthens the sustaining power of the uterus. Is it not possible, too, that it gives a needed _exercise_ to the fetus, a constant gentle motion promoting the functions necessary to its development and growth? Breathing for the most part is an involuntary action, and in children and animals is performed naturally from the abdomen or flank. “Look upon that quietly sleeping cat on the rug. Its sole indication of vitality is the bellows-like motion of its body in breathing. You must also have observed that in _all_ domestic animals, at each respiration, an undulating motion extends quite through the whole trunk, and that this motion terminates only at the hindermost limbs. This is natural respiration as it is performed throughout quadruped existence.