Daily health care. Health care should start from daily life, pay attention to protecting yang and nourishing yin, keep warm against cold, pay attention to nourishing yin and moistening lungs in diet, regulate the body and improve the body's resistance and immunity, so it is daily health care. Health preservation, as the name implies, is to maintain life, and it is an activity to enhance physical fitness, prevent diseases and prolong life through health care methods and means.