If your main reason for investing in a whole body vibration machine is improved lymphatic function, the most effective vibration types for you will be sound, Oscillating/Pivotal or Spiral. Oscillating machines move in a see-saw motion. One side goes up and the other goes down and vice-versa (similar to a walking motion). This gentle motion is great for massage, lymphatic drainage, blood flow and circulation. These machines have two totally different motions--Triplanar (up-down/front-back) and Pivotal. These motors can be used independently or together. When used together, these two motors make a figure 8 motion. This is an extremely gentle motion on the gel areas of the spine and joints, with many benefits such as lymphatic drainage, improved circulation, improved bone density, pain reduction, detoxification and muscle building on the higher hertz ranges. These machines use high powered speakers to create very smooth, soothing vibrations. These motions relax you, detox you and can also build muscle on higher settings and are the most gentle on the body. The vibrations sent from these machines create little muscle twitches that help push lymph through the body. Lymph travels through the body picking up toxins and bacteria and gets them out of your body through the organs that make up the lymphatic system.