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I have always felt motion sickness when I am a passenger in a car (in the backseat). However, when I drive the car, I seem to experience no motion sickness at all. I can see how the concentration required to drive the car alleviates the sense of nausea. We have to focus on where we are heading and our surroundings (visual and sensory aspects). Why do I feel less nauseous when I am a passenger in the front seat? Also, in addition to closing my eyes when I felt sick, I used to wear little wristbands with a tiny marble that I would place on my pulse. This would alleviate some of the motion sickness. How does this work?