I did my MCC in a motion sim and having a pretty solid stomach was shocked when I was overcome with the second worst bout of sickness I have ever experienced (the worst, for those who wonder, was on a very hot and stuffy coach between Heathrow and Gatwick on an especially warm and busy July afternoon, I
hate coaches...).
What struck me as especially odd was I only experienced this when simulating movement on the ground, once "airborne" I was fine