I met a guy who researched motion sickness for the Canadian Space program - he had this machine that flipped cats around and a larger one built for himself and his human subjects. Apparently D2O and Alcohol are quite good preventing it.
D2O is expensive, answer train drunk. <---- humor.
Serious answer - don't role a lot. Role until you start to become dizzy and then a couple more. No need to get sick and ruin the rest of your practice. During general practice you do roles much less frequently allowing your equilibrium to recover.