Two-hand start (suitable for skilled people): hold the wrist ball with one hand, the opening part is upward, and the thumb of the other hand is placed on one side of the opening of the outer ball in the direction perpendicular to the central groove of the ball core; Push your thumb into the central groove to make the core rotate quickly, then turn your wrist with the opening part facing down, and gradually exert force until you can feel the speed of the core increase.
One-handed start (suitable for some experts): Hold the wrist ball with the opening facing up, and move the ball core quickly with your thumb along the central groove of the ball core. After reaching a certain speed, immediately turn the opening downwards, and then gradually exert force until you can feel the speed of the ball core increasing.
Wrist ball is the abbreviation of wrist fitness ball, also known as power ball, magic ball, gyro ball and super gyro. It was invented in Taiwan Province Province, China, popular in Taiwan Province Province, and then spread to Europe and America, and gradually spread to all parts of the world.
Wrist power ball is the fastest artificial power device in the world. It is purely mechanical, without batteries and any power supply, and without electromagnetic radiation. The rotation of the wrist drives the ball core to rotate at high speed, thus generating powerful power. Through manual control, the rhythm and speed of ball core rotation can be adjusted at will. The faster the speed, the greater the strength, which can be equivalent to 50 kinds of dumbbells with different weights. There is about 14kg force at 8000 rpm, and about 22kg force at 10000 rpm.
Because of the powerful power generated by its high-speed rotation, it is very helpful to exercise the strength and toughness of fingers, wrists and arms. It integrates sports, entertainment and fitness, and is increasingly favored and loved by people all over the world.
References:
Baidu encyclopedia-wrist ball