Contraindications include special physiological periods, specific physical conditions, skin problems, just after eating, and improper operation.

1. Special physiological periods: Women should not knock on the pulse during menstruation and pregnancy. Knocking on the pulse during menstruation may lead to menstrual disorders such as heavy menstrual flow and prolonged menstrual period; Knocking on the pulse during pregnancy may irritate the uterus, causing uterine contractions and increasing the risk of miscarriage or preterm birth.

2. Body-specific conditions: Those who suffer from chronic diseases such as severe heart disease, hypertension, diabetes and their condition is unstable, and it is not suitable to knock on the pulse. Because knocking on the pulse may cause the body's stress response, resulting in blood pressure fluctuations, blood sugar changes, etc., which is not conducive to the control of the disease. People with weak constitution and insufficient qi and blood should also be cautious about knocking on the pulse, as overstimulation may further damage the righteous qi. In addition, in the acute attack period of the disease, such as cold and fever, acute gastroenteritis, etc., it is not advisable to knock on the pulse, so as not to affect the recovery of the body.

3. Skin problems: If the skin at the site of the knock pulse is broken, ulcerated, inflamed, rashed, etc., the knock pulse cannot be performed. Because knocking on the band pulse will come into direct contact with the skin, it may aggravate the skin damage and cause infection, which is not conducive to the recovery of skin problems.

4. Just after eating: Do not knock on the pulse immediately after eating. After eating, the gastrointestinal tract needs a large amount of blood for digestion and absorption, and knocking on the pulse may affect the blood circulation of the gastrointestinal tract, resulting in indigestion, abdominal pain and other uncomfortable symptoms. It is recommended to perform the pulse knock 2 - 0 hours after meals.

5. Improper operation: When knocking on the pulse, pay attention to the moderate force, and do not use too much force. If you exert too much force, you may damage the muscles and internal organs of the abdomen, causing pain and bruising. At the same time, the frequency of beating should not be too fast, and a relatively stable and regular rhythm should be maintained. In addition, the time of knocking on the pulse should not be too long, about 15 - 0 minutes at a time, as excessive knocking on the pulse may cause adverse effects on the body.

Although knocking on the pulse has a certain health care effect, it is necessary to fully understand the relevant contraindications when carrying out the process to avoid unnecessary harm to the body due to improper operation. If you are unsure whether you are suitable for knocking on the pulse, it is recommended to consult a medical professional.

This article is only for health science popularization and does not constitute medication or medical guidelines, it is recommended to seek medical attention in time if you have health problems.