This document discusses motion sickness, which is caused by repeated motion from things like cars, boats, or planes. Motion sickness affects the inner ear organs that control balance and equilibrium. When the body moves unintentionally, like in a car, the brain has trouble coordinating signals from the inner ear, eyes, and body sensors, which can lead to nausea, vomiting, dizziness, and other symptoms. Common treatments include medications like meclizine, dimenhydramine, and scopolamine patches. Techniques to prevent motion sickness include looking at distant stationary objects, sitting in areas with less motion, and avoiding triggers like reading or strong smells while traveling.