Acute upper respiratory infections are very common in clinical practice, mostly because viruses invade the body causing symptoms such as nasal congestion, runny nose, and sneezing. Only a small number of patients might have bacterial infections on top of the viral infection, or are suffering from an upper respiratory infection caused by a specific bacterium. Clinically, some of these patients can recover on their own, as the severity of respiratory infections varies and some patients have strong immune systems. Therefore, by exercising appropriately in their daily lives, drinking plenty of warm water, and consuming foods high in vitamins and proteins, a small number of these patients with mild conditions can heal on their own.