Can fitness improve immunity and treat diseases

Fitness can help improve immunity, but it cannot directly treat diseases. Moderate exercise can enhance immune system function and reduce the risk of infection, but medical measures still need to be coordinated for diseases that have already occurred. Regular exercise can promote the circulation of immune cells and increase the speed of antibody response. Aerobic exercise such as brisk walking and swimming can increase neutrophil activity, while strength training can enhance immunoglobulin levels. Engaging in moderate intensity exercise every week can help reduce the probability of upper respiratory tract infections and shorten the course of the disease. Raising body temperature during exercise can inhibit the proliferation of some pathogens, and long-term exercise can also improve sleep quality, indirectly enhancing immune defense. Excessive exercise can actually suppress immune function, with an immune window period occurring 3-72 hours after intense exercise such as marathons. Patients with chronic diseases need to avoid high-intensity training. Excessive exercise in patients with diabetes may cause hypoglycemia, and strenuous exercise in patients with cardiovascular diseases may lead to sudden death. Improper exercise in patients with autoimmune diseases may exacerbate inflammatory reactions, and a plan should be developed under the guidance of a doctor.

Maintain 150 minutes of moderate intensity exercise per week, combined with resistance training and flexibility exercises, and promptly supplement protein and vitamins after exercise. When acute symptoms such as fever and joint swelling occur, exercise should be suspended, and chronic disease patients should regularly monitor relevant indicators. The immune benefits of exercise are dose-dependent, and it is recommended to personalize exercise prescriptions based on data such as body fat percentage and maximum heart rate.