The HyperGravity Fit-N-Flex Whole Body Vibration (WBV) Machines can be extremely valuable for people suffering arthritis and rheumatism, the extremely painful stiffness in and around joints. The vibrations of the HyperGravity Fit-N-Flex Whole Body Vibration (WBV) Machines are proven to help increase blood circulation and nutritional effects of the cartilage in the joints. This “pumping” of the fluid in the joints will dramatically increase flexibility and the range of motion. Vibration training on the HyperGravity Fit-N-Flex Whole Body Vibration (WBV) Machines is a non-strenuous, low impact method that requires less time and achieves better results than a lot of other therapies.