How can one improve immunity and resistance?

To enhance immunity and resistance, you need to make certain lifestyle changes that improve your body's ability to respond to pathogens. First, pay attention to nutrition. Consuming more foods rich in vitamin C—such as vegetables, fruits, fish, meat, and grains—can help boost resistance. Second, engage regularly in physical exercise. Aerobic activities like jogging, walking, and cycling promote cardiovascular health and strengthen the immune system. Third, maintain good sleep habits. Adequate sleep helps sustain a healthy immune system and reduces accumulated fatigue. Additionally, keep your body clean and minimize exposure to pollutants, avoiding any factors that could compromise your resistance. Finally, promptly supplement essential nutrients such as calcium, vitamin D, and vitamin C, along with herbal plants and antiviral medications known to support immune function and antiviral defenses.