Management tools, such as fingers. Hand-hold for 30-40 seconds.Kam ball size fits the hand and then bipraeng do 10 times. Use the thumb about an inch, the other a O make a total of 5 rounds.
Executive fingers like grip - ignore Hold 30-40 seconds, four times the size of the hand grip and squeeze a ball sharply to 10 times the thumb about an inch more, making a total of five round-shaped O.
Fingers like managementKam - hand hold 30-40 seconds. Do 4 times.The ball size fits the hand and squeeze force, make the 10 times.The thumb of the other fingers to a O do all 5 around.