Well!  I just started today. ;')  I have to notice a remarkable phenomenon that I experienced while on the WBV machine.  I had an overwhelming physical sensation of "floating" or "raised up" feeling, above the platform.  Although hard to describe it was as if I was a stationary object at one level of physical placement and when the machine engaged I was lifted up and when the machine decelerated then I had sensations of landing gently back down to my perceived original position.  I'll look joyfully forward to my next "flight" on the WBV machine!  Don't for get to place your items in the overhead compartment!  ;')))

Safe travels!,

John