The most desirable constitution is the “peace and harmony” constitution. The overall characteristics of the “peaceful and harmonious” constitution are: moderate body posture, rosy complexion and high energy level; less frequent illnesses; and strong adaptability to the natural and social environment. The diet of a person with a calm temperament should be moderate in temperature and cold, and the four seasons should be adjusted in accordance with the changes of the four seasons. Spring: eat more vegetables such as spinach, celery and other light and transparent products; summer: it is appropriate to eat more fruits, such as watermelon. Other products such as chrysanthemum, mung beans, winter melon, etc. can be consumed as appropriate; summer and autumn: choose poria, barley, lentils and other light permeable dampness and spleen-healthy products, and avoid nourishing and greasy stomach; autumn: it is appropriate to use maitake and other lung yin conservation products; winter: optional ginger, mutton and other warm tonic products. The living should be in accordance with the four seasons, to maintain a good routine. Exercise should be active, moderate exercise, not too much.