Did you know that when you sneeze, all bodily functions stop, even your heart? Sneezing is the body's way of removing irritants; it is most often caused by dust, strong smells, temperature changes or infections. The muscles of the abdomen, chest, diaphragm, neck, face and eyelids are engaged in this complex process. A strong sneeze can cause the material spread to travel 2-3 metres (6-9ft) forward at a speed of 150 km/hour (93 mph).
