宜家家居官网-宜家电商-提供客厅，卧室，厨房，各类家居灵感和产品解决方案- IKEA

You can ask two groups of experts about our children's swivel chairs and hanging chairs. Scientists say "swinging develops the sense of balance and body perception and brings a feeling of well-being and relaxation" and "spinning helps the brain sort sensory impressions." The kids just say "Whee!"