Wash hands regularly
Avoid close contact with sick people
Do not share utensils, cups, or towels
Stay hydrated
Keep indoor air moist with a humidifier
Avoid smoking and secondhand smoke
Limit exposure to dust, fumes, and allergens
Rest your voice when needed
Breathe through your nose when possible
Maintain good oral hygiene
Treat allergies promptly
Manage acid reflux if present
Cover your mouth and nose when coughing or sneezing
Get recommended vaccinations
Replace toothbrush after illness
Eat a balanced diet to support immunity