This is just another book giving advice on health and hygiene. It is chiefly a retelling of the well known and little heeded facts that we must eat, sleep and play in order to be healthy. Some physicians will not agree with some of the statements the author makes in suggesting certain foods for the daily diet. For example, the idea of alfalfa as a dinner vegetable will leave most persons cold. The advice given on exercise is sane, but the author should make it a bit more clear that no one should indulge in any program of exercise, even for recreation, without being certain that he has been recently examined and has no defects which might be made worse by exercise. The anecdotes of the author's experiences during his world travels are an attractive feature of the book. There are too few of these.