Overstrain, stress or lack of physical exercise

Normal physical exertion and rest do not cause disease, and indeed form the basic conditions for building up the constitution and preventing disease. Overstrain and stress or lack of physical exertion, however, may cause disease, the thirty - ninth chapter of Plain Questions says : " Overstrain or stress consume the vital energy of the body. " Prolonged overstrain or stress will weaken the antipathogenic qi and result in clinical manifestations such as loss of weight, lassitude, disinclination to speak, palpitations, insomnia, dizziness and blurred vision.

Excessive sexual activity will injure the kidney qi, resulting in symptoms of deficiency such as soreness and weakness of the lumbar region and knee joints, dizziness, tinnitus, impotence, ejaculation praecox, lassitude and irregular menstruation.

An excessively comfortable life and lack of physical exercise can impair the circulation of qi and blood, weaken the function of the spleen and stomach, and sap body resistance. Clinical manifestations include softening of the bones and tendons, poor energy, poor appetite, lassitude, obesity, and shortness of breath on exertion. They may also induce other diseases.