I. Basic knowledge and concepts 1. Health is not just the absence of disease or infirmity, but the intact state of physical, mental and social adaptation. 2. Everyone has the responsibility to maintain their own health and the health of others, and a healthy lifestyle can maintain and promote their own health. 3. Healthy lifestyle mainly includes 4 aspects: reasonable diet, moderate exercise, smoking cessation and alcohol restriction, and psychological balance. 4. Combine work and rest, and ensure 7~8 hours of sleep every day. 5. Smoking and passive smoking can lead to cancer, cardiovascular disease, respiratory disease and many other diseases. 6. The sooner you quit smoking, the better, and it is never too late to quit. 7. Health food cannot replace medicine. 8. The environment is closely related to health, and protecting the environment can promote health. 9. Donating blood helps people and promotes free blood donation. 10. Normal blood pressure for adults is less than 140 mmHg systolic and less than 90 mmHg diastolic; axillary body temperature 36℃~37℃; calm breathing 16~20 times/min; pulse rate 60~100 times/min. 11. Avoid unnecessary injections and infusions, one person must do one needle and one tube when injecting. 12. Workers engaged in toxic and harmful types of work have the right to occupational protection. 13. Vaccination is the most effective and economical measure to prevent some infectious diseases. 14. Tuberculosis is mainly spread by droplets from patients coughing, sneezing, talking loudly, etc. 15. If you have been coughing and coughing for more than 2 weeks or have blood in your sputum, you should be checked for tuberculosis. 16. Adhere to regular treatment, the vast majority of tuberculosis patients can be cured. 17. AIDS, hepatitis B and hepatitis C are transmitted through three ways: sexual contact, blood and mother-to-child transmission, but not through daily life and work contact. 18. Mosquitoes, flies, rats, cockroaches, etc. can spread the disease. 19. Abnormal masses, bleeding from the lumen and intestines, and sudden weight loss are important early warning signs of cancer. 20. If you encounter a patient with respiratory or cardiac arrest, you can give first aid by artificial respiration and chest compressions. 21. We should pay attention to and maintain our mental health and seek help when we encounter psychological problems. 22. Everyone should care for, help and not discriminate against the sick and disabled. 23. Vaccination against influenza before the epidemic season can reduce the chance of getting influenza or alleviate the symptoms of influenza. 24. Store toxic substances such as pesticides and medicines properly and prevent children from coming into contact with them. 25. In case of traumatic bleeding, especially heavy bleeding, bandages should be applied immediately to stop the bleeding; the injured person with fracture should not be moved easily.