Elastic band is a physical training tool made of natural latex, also known as an elastic ring, mainly used for strength training, body shaping, and rehabilitation training. Its application history can be traced back to a hundred years ago, initially serving the needs of strength enhancement and body shaping in the fitness field, and gradually expanding to daily fitness and professional rehabilitation scenarios. This tool generates resistance through stretching length changes, allowing for multi angle training of muscles throughout the body, without being limited by gravity, and with flexible motion design