The principles of health control . nd. On thedays following undue exertion,constipation is usually more pro-nounced, and as a result of restand relaxation it may entirelydisappear. Students while underthe strain of examinations quitefrequently observe a tendency to-ward the stoppage of the who are habitually consti-pated frequently experience reliefduring a period of vacation onlyto have the trouble return ongetting back into the regular rou-tine of work. 2. Insufficient exercise. — Wheninsufficient exercise is taken, moreespecially when those forms ofexercise are omitted that ca
The principles of health control . nd. On thedays following undue exertion,constipation is usually more pro-nounced, and as a result of restand relaxation it may entirelydisappear. Students while underthe strain of examinations quitefrequently observe a tendency to-ward the stoppage of the who are habitually consti-pated frequently experience reliefduring a period of vacation onlyto have the trouble return ongetting back into the regular rou-tine of work. 2. Insufficient exercise. — Wheninsufficient exercise is taken, moreespecially when those forms ofexercise are omitted that call themuscles of the trunk and abdomeninto play, the coats of the intes-tines become thin and in muscular tone theycontract feebly, or not at all, whenotherwise they would contract vigorously to propel thematerial along. Then if the muscles in the abdominalwalls (Fig. 37) are relaxed and flabby, the intestines aresituated, as it were, in a loose bag, from which theyreceive insufficient support and stimulation. Under. Fig. 37. — Muscleswhich Support Abdomi-nal Organs (Morris). Aweakened condition ofthese muscles is amongthe most frequent causesof constipation. 174 PRINCIPLES OF HEALTH CONTROL normal conditions the abdominal walls massage theintestines, thereby improving their blood supply andexciting peristalsis. This effect is lost when insufficientexercise is taken. 3. Improper posture. — Any position habitually as-sumed which induces a backward instead of a forwardbend in the small of the back, and which relaxes the front
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecthygiene, bookyear1920
