I have often known clerks and floorwalkers {141} who have to stand all day or move but a few steps at intervals, who were so tired at night that they felt the one thing they could do was to sit down for a while after dinner and then go to bed, but who came to feel ever so much better after a brisk walk home. It was rather hard to persuade them that, exhausted as they felt, they would actually get rested and not more tired from vigorous walking, but once they tried it, they knew the exercise was what they needed. The air in stores is often dry and uncomfortable for those who are in them all day. It is usually and quite properly regulated for the customers who come in from the streets expecting to get warm without delay. In dry, cold weather particularly, an evening walk home sets the blood in circulation until it gets thoroughly oxidized and the whole body feels better. Such a brisk walk will often prevent the development of flat foot, especially if care is taken to spring properly from the ball of the foot, in the good, old-fashioned heel and toe method of walking. Once flat foot has developed, walking probably is more difficult, but even then, with properly fitting shoes, the patients will be the better for a good walk after their work is over. It requires some will power to acquire the {142} habit, but once formed, the benefit and pleasure derived make it easy to keep up the practice. Those who walk thus regularly will often find that their evening tiredness is not so marked, and they will feel much more like going out for some diversion than they otherwise would. Probably nothing is more dispiriting in the course of time than to come home merely to eat dinner, sit down after dinner and grow sleepy on one's chair until one feels quite miserable, and then go to bed. There should be always, unless in very inclement weather, an outing before bedtime, and this should be looked forward to. It will often forestall the feeling that the day is over after dinner and so keep the individual from settling down into the dozy discomfort of an after-dinner nap as the closing scene of the day. Good habits in this matter require an effort of the will to form; bad habits almost seem to form of themselves and then require a special effort to break.