Our bodies are designed with motion in mind. The joints and the muscles that move them need to be flexible and strong in order to move smoothly. By helping to maintain the muscles flexibility, we also help to keep the muscle working in its full range of motion. Maintaining a full range of motion allows our bones and joints to continue performing our movements relatively, pain free. HyperGravity Fit-N-Flex Whole Body Vibration (WBV) Machines is important in this matter as the vibrations will stimulate the nutritional effects in the articulations, and diminish neuromuscular adhesions. For general muscle flexibility, performing one stretch for each muscle group will be enough to maintain your current muscle length. Holding each position for 30 seconds up to 90 seconds is enough. For this purpose you best choose moderate frequencies. When engaging in a stretch and flexibility routine, safety is always a first priority. Listen to what your body tells you, if a position feels uncomfortable in a joint area, or is causing stress in an unrelated muscle group, modify your exercise and seek guidance.