Motion sickness occurs when your senses send you conflicting messages. Whether you’re in a car, on a boat, or in a plane during turbulence, your body can tell that you’re moving, but your eyes tell a different story.

The inner ears, which are responsible for your balance, send messages to the brain telling it that the body is physically moving, meanwhile the eyes send messages that the body is stationary. This conflicting information may cause unpleasant motion sickness symptoms.