Hi, it is termed as motion sickness. If you're susceptible to motion sickness: Focus on the horizon or on a distant, stationary object. Don't read. Keep your head still, while resting against a seat back. Don't smoke or sit near smokers. Avoid spicy and greasy foods and alcohol.Don't overeat. Eat dry crackers or drink a carbonated beverage to help settle your stomach if you become ill. Consult Physician for medications...