Motion sickness: This might explain why some people feel sick in cars or on trains

If you’re someone who suffers from motion sickness, travelling in many types of vehicles can be difficult thanks to a host of symptoms like dizziness, lightheadedness, nausea and even vomiting. But it’s not completely clear why some people can read and play games on their phone during a long drive while others spend the journey desperately trying not to be sick. Nor is it clear why some people only experience motion sickness in certain types of vehicles and not others. But there are two theories that might help explain what’s going on.