1, choose a small ball first, like a golf ball. If you want to massage small areas, such as hands, feet or forearms, balls are the best. This is because the smaller diameter will allow the ball to enter the muscle without putting too much pressure on your bones.

Secondly, use medium-sized balls, such as lacrosse, to exercise larger muscle groups. This size is very suitable for your shoulders, back, gluteus maximus and legs.

3. Finally, choose a protruding ball to increase the pressure. Because the skin on the feet is very thick, it is difficult to do deep massage.