Be not so impatient, my dear sensible one, we are coming to that now. One great reason of your back-ache is that stoop of yours. You seem to think it essential to maintain your spine in the shape of the letter C. You have got into a very bad habit, and if you try now to sit upright you get as tired as possible--your back, too, is not the only sufferer; your digestive organs are all cruelly cramped--all the delicate machinery, by the aid of which occur the changes of the food in its conversion to the different bodily tissues, is impeded in its action, is hemmed in, is fretted. Instead of a free circulation, and an unimpeded course between all the channels of communication, the functions of digestion are carried on with difficulty, and the stooping pose is the cause of many other complications into which we have not space to enter here. We have said that exercise is necessary. A great part of that is indeed gained by the walk to and from business. But that is not sufficient. Indeed, we do not consider that walking exercise, exclusive of any other, is sufficient to keep the body in health; but in the instance we are imagining it is especially insufficient. The body ill brooks being kept in one posture for any length of time; and during sedentary occupation some of the muscles are maintained in a state of extension, whilst others are as unduly kept in a state of relaxation. These relative conditions, kept up as they are for hours and hours, cannot fail to have their marked results on the health of our girl. If she were at home, she would throw her work aside, get up and walk about a little, or run upstairs to stretch out her limbs; but in business this is not to be thought of; so she must bear it as best she can. Not so, say we. There is even here a remedy--even here a way of procuring an immense amount of relief. Our only fear for its adoption, however, rests in its extreme simplicity. But when our girl thinks a little more she will learn that all really great and effective things are simple, and that it is only their useless wrappings that blind people to their real simple grandeur. We shall give O. S. G. our remedy in its modest garb of truthfulness, and she will, we think, not reject it. We would advise her, then, three or four times during the day, to stand upright by her chair--she need not even move from her place--throw her shoulders back, stretch her head up, expand her chest, and arch the spine well inwards, remaining in that position for at least half a minute. This will entirely change the posture of all the muscles, those which before were expanded being now contracted, and _vice versa_. She will then send her arms straight up over her head, and either bring them down from there like a wheel, or, if she has not room for this, will bend her arms so as to form a V with each arm, the two points of the V being respectively the shoulder and hand and the lower point the elbow. If done properly,