What should a 45-year-old man do if he catches a cold every spring?

A 45-year-old man catches a cold every spring. This can be improved by enhancing immunity, taking proper springtime precautions, regulating daily routines, optimizing diet, and implementing reasonable preventive measures. Spring weather is changeable and viruses are highly active, so targeted protective steps are essential. If the cold is accompanied by persistent high fever, difficulty breathing, chest pain, or similar symptoms, prompt medical attention is recommended.

1. Enhance Immunity: After age 45, immune function gradually declines. Engage in moderate exercise such as brisk walking or swimming, 3–5 times per week for at least 30 minutes each session, to improve blood circulation and boost immune cell activity, thereby reducing the risk of viral infection.

2. Take Springtime Precautions: Spring temperatures fluctuate greatly; adjust clothing promptly to avoid catching a chill. Wear a mask when going out to block pollen and prevent virus transmission. Avoid crowded, enclosed spaces. Wash hands and disinfect upon returning home.

3. Regulate Daily Routine: Avoid staying up late and overexertion. Ensure 7–8 hours of sleep each night. Chronic sleep deprivation weakens immune function, making it easier for viruses to invade. Maintaining a regular schedule helps the body sustain its defensive capabilities.

4. Optimize Diet: Consume more foods rich in vitamin C and protein, such as fresh fruits and vegetables, lean meats, and soy products, to nourish the body and strengthen constitution. Limit spicy and greasy foods to avoid increasing metabolic strain.

5. Implement Reasonable Preventive Measures: Receive influenza vaccination under a doctor’s guidance to build an early immune barrier. At the first signs of illness—such as mild sore throat or fatigue—drink plenty of water and rest promptly to prevent progression of symptoms.

Maintain indoor ventilation by opening windows 2–3 times daily for 30 minutes each time to ensure air circulation and reduce viral buildup. Drink warm water in moderation to promote metabolism, and avoid tobacco and alcohol, which can irritate respiratory mucosa, thus helping the body resist spring colds.