Its mechanism is that the fitness ball is often rotated by hand, and by stimulating Shaofu point of the heart meridian of hand shaoyin and Laogong point of the pericardium meridian of hand jueyin, the meridians can be dredged, the nerve function can be adjusted, the mental stress can be relieved, and the recovery of physical and mental fatigue can be promoted. When the hollow fitness ball rotates, it can make a melodious jingle of alternating high and low tones, which is a good stimulus to the brain and is also conducive to relieving brain tension; Rotating the fitness ball frequently can not only keep the meridians unblocked, but also dilate blood vessels and improve microcirculation, thus regulating cardiovascular function and promoting blood pressure drop.