Motion sickness, also known as kinetosis, is a common ailment that occurs when travelling by car, bus, train, ship or plane. It manifests itself by nausea, dizziness, weakness and, in some cases, vomiting. The cause of this condition is an imbalance between the stimuli received by the eyes, the vagus and the nervous system. However, there are a number of healthy methods of dealing with motion sickness to minimise the symptoms and make the journey more comfortable.