In a relatively flat and comfortable place, relax your body, bend your legs, touch the ground with your hands, toes and knees, tiptoe slightly leans forward, body slightly leans forward, and limbs move in harmony, which is not fast but stable (if it is fast but unstable, it can only be called "baby learning to crawl"). Exercise time doesn't need to be too long, just twice a week (pay attention to protect your knees). Crawling practice is limited by bad environmental factors such as venues. The fitness equipment industry has invented a kind of equipment that can do crawling exercise in indoor environment. This equipment is named Fitzgerald Crawler in the world, which breaks the limitation of the venue and is an internationally recognized crawling fitness equipment.