Anyone can learn to control their equilibrium when dizzy, and not get sick and puke as far as I know. I had a friend in gradeschool who used to hate getting dizzy as she would always puke after like 10 turns, but her mother enrolled her in figure skating and after about 1 year she could spin in a circle for hours and not get sick or dizzy. I mean, a skater has to be able to spin around in circles and come out of it and be able to continue right? They do it all the time and don't get sick. As far as I know, getting dizzy from being spun is partly due to the inner ear, the fluid that helps balance you when your eyes are closed. But if you have some problem that you were born with, like extreme sensitivity to motion sickness, then I'm not sure how much you can improve on that. But maybe not as my brother used to never be able to read in the car for more than 5 minutes without feeling like he was going to puke, but now he can read for hours without feelings sick. And me, I can read all day all night while the car does doughnuts and I won't get sick.