In seeking methods for building unusual vigor and vitality, one of the first requirements is definite information on the care of the alimentary canal. Mere regularity of the bowels does not in all cases indicate a healthy condition of the stomach and bowels. A movement in order to be of the right sort should be so thorough that it leaves one with a feeling of emptiness and cleanliness. In other words, you should feel that the colon has been evacuated thoroughly. Many who have regular bowel movements do not have this satisfying sensation afterwards. When the movement is satisfactory in every way little or no straining is necessary. The colon simply empties itself thoroughly, and the evacuation is then complete. However, few have movements of the bowels that are satisfactory to this extent. There should be at least one bowel movement of this kind each day. Two movements of this character would be better, but one is sufficient if thorough. Do not acquire the idea that the bowels must move at a certain time each day with unintermitted regularity, for they are subject to the same extent as the appetite to what might be termed idiosyncrasies, according to environment and other influences. For instance, you are not always hungry at meal-time. Occasionally you eat very little or skip one or more meals, and it would be a serious mistake to goad your appetite with some stimulant or to eat a meal without an appetite. One can hardly say that to force a bowel movement when its necessity is not naturally indicated is as harmful as to eat a meal when it is not craved, but unquestionably it is of advantage to have the bowels move of their own accord, as the result of a natural impulse. Movements that do not come through the call of an instinct for relief are rarely satisfactory, and, though we strongly emphasize the necessity of regularity of the bowels, it is not absolutely necessary that this call should come at a certain time during each day; and though it is undoubtedly of some advantage if such is the case, yet so long as there is one evacuation each day of the satisfactory sort described, you can be assured that your alimentary canal is in a normal and healthy condition. However, should the bowels fail to move at the regular time this need not cause concern if you are feeling "up to the mark," and there are no other symptoms that would indicate possible trouble. I mention this alimentary peculiarity to enable my readers to avoid the slavish idea that it is impossible to be in health unless the bowels move at certain times with clock-like regularity.