Ages 3-8 are the prime time for a child's physical development. The gaps in all aspects of a child's physical abilities are beginning to show at this stage. For children with relatively weak core and hand strength, and relatively poor sensory ability, balance, and concentration need a certain level of training to bridge the gap. Professional training for children for the intensity of the training is too cumbersome, so we specifically designed this search for the swivel chair. When children play with this chair, they will naturally use their arms and waist to maintain balance, while improving their concentration and balance. Compared to training, playing is a more suitable way for children to exercise.