As people’s living standards continue to improve and their awareness of their health deepens, they are paying more and more attention to health care issues. However, many people are at a loss as to how to properly take care of their health and how to deal with the wide range of health products on the market. Here, I would like to introduce you to the most natural health care products that do not cost a lot of money, “laugh”. As the saying goes, “A smile is less than ten years, a smile is more than a hundred diseases,” “a day smile three smiles, better than eating magic medicine,” “smile often, health is always in”… … are all about the benefits of “laughter” to the body. “Laughing” has always been regarded as the secret of health care by Chinese medical practitioners, and is considered to be the best natural health care product that is inherent and does not cost money. Medical research confirms that smiling has the following benefits: smiling involves 13 to 16 muscles of the face, often smiling can exercise the elasticity of facial expression muscles, is the key to keep the face youthful. A sincere smile from the heart can lower blood pressure, improve heart function, increase intelligence and brain, promote appetite, improve sleep; accelerate blood flow, enhance cardiovascular function, improve blood circulation; intermittent laughter, can burn calories, will play a weight loss effect; can stimulate the brain to release a substance called endorphins (similar to morphine), relieve pain in the joints, back, head, chest and other parts of the body, and cause a sense of euphoria, the whole body It is a natural sedative and narcotic; it is the best easy gymnastics, which can make the face muscle movement, chest muscle stretch, chest expansion, lung capacity increase, abdominal muscle contraction, so that the body can be exercised. Laughter can release stress and reduce frustration; laughing stimulates the body to secrete dopamine, which makes people feel euphoric. At present, more than 70% of diseases are caused by stress, such as high blood pressure, heart disease, depression, cold, insomnia, headache, stomach discomfort and even cancer, etc. Laughing can precisely play a role in relieving stress, relaxing the spirit and resisting diseases. Heartfelt laughter can regulate the activity of natural killer cells, the natural enemy of cancer cells in our body, and therefore, laughter can help cure and prevent cancer. Although laughing can dispel diseases and keep fit, it must be done in moderation, so as not to be overwhelmed by joy. The elderly with cardiovascular disease, excessive laughter may occur cardiovascular accidents. For those who suffer from gastric ulcer, laughing can excite the vagus nerve, increase gastric acid secretion, strengthen the muscle tension of the stomach wall, increase abdominal pressure, and easily induce ulcer perforation. After surgery, habitual dislocation of the jaw joint, hernia, urethral or anal sphincter relaxation of patients are not laughing. Therefore, laughing should be “to avoid harm”. Nowadays, laughing therapy is popular all over the world, and the laughing industry has emerged – there are laughing clinics in India, laughing clubs in France, laughing noodle shops in Switzerland, laughing schools in Japan, laughing competitions in Germany, laughing hospitals in the United States, and so on. Let’s laugh, let the tension nerves relax, let the chest and abdominal muscles relax, let the internal organs receive massage, do a full range of health gymnastics without spending money.