To prevent fever and cold-related illnesses, it is essential to practice good hygiene by washing your hands frequently or using an alcohol-based sanitiser to halt the spread of viruses. Try to limit close contact with anyone who is sick. Focus on a balanced diet that includes plenty of fruits and vegetables to strengthen your immune system, ensure you stay hydrated, and get sufficient rest. When seasons change, dress suitably for the weather and consider getting any recommended vaccinations, such as the flu shot.