There is no need here to explain how Food and Drink affect the mind. We all know some of the depressing effects of “Liver,” Indigestion, Constipation, etc., and the partial dependence of these troubles on the Food and Drinks. But few who have not studied the subject as I have been enabled to do, thanks partly to my work with the leading Clinical Analytical Expert, Mr. C. H. Collings,[C] could guess how some of the most common and respectable errors of Food and Drink--such as excess of starchy and sugary stuff, of fruit, of tea or coffee or cocoa, and so on--can produce non-Health and consequent Non-Happiness, partly by affecting the Brain and the Solar Plexus through tissue-storage of toxins and Toxœmia or an acid and poisoned bloodstream. There are thousands who imagine that, because most of their “civilised” acquaintances regularly take certain meals as a matter of course, therefore these meals must of necessity be “all right”; not knowing that Nature does not withhold from us her results according to Law--often called her “punishments”--merely because large numbers of other individuals are making similar mistakes! To be orthodox in life is not the same thing as to be immune from the effects of orthodox mistakes. I could show letter after letter that tells how, beside better Foods and Drinks, simple Water-treatments, and various Exercises have tended to Health and Happiness. There are Exercises (like those in “Economy of Energy,” pp. 79, 83, 86, 87, 90, 94, 97) which help improve the Position of the body, the fulness and the rhythm of the Breathing, the economy of the muscles, by Relaxing and so forth. There are Stretching Exercises, Foot-Exercises, Trunk-Exercises, Athletic Exercises, and so on. But one or two items must suffice here, as mere examples of how attention to physical acts may influence the state of the mind. Better Position; Better Breathing; Less Muscular Tension 1. When the heart and lungs and stomach are sunk and sagged down, there is a tendency to mental as well as to physical “depression.” The right Exercises[D]--quite simple and easy--will draw the organs up into their normal place again, and thus will help to remove “the dumps” and bring Happiness. 2. Happiness has its own type of Breathing (as shown by the Pneumograph and the registering cylinder-drum) quite different from the type when there is fear or anger. If we establish as a habit the deepness and fulness and rhythm of the Breathing that goes with Happiness, we are half way towards removing Non-Happiness and getting Happiness itself. 3. When there is anger or restless worry, there is, regularly, some muscular tension. Do away with this, and relax the muscles--the Art[E] can be taught and learnt--and the tendency is for the unsatisfactory feelings themselves to disappear. A Warning about Stimulants with Re-action