And, if you can work out how to do 1G acceleration, you can probably work out how to 2 or 3 or 4G acceleration. That's going to get uncomfortable, but most peo

And, if you can work out how to do 1G acceleration, you can probably work out how to 2 or 3 or 4G acceleration. That's going to get uncomfortable, but most people should be able to cope with 2 or 3G acceleration for short periods.