Joseph Pilates, the creator of the Pilates method, was a beer drinker. Beer was delivered to him in barrels. Once emptied, Joe saw the opportunity to play with the beer barrels and his metal rings. He used them to invent a new exercise equipment. The metal rings equivalent to the Pilates Circle, a circle.
An apparatus that allows for a variety of exercises, often preferred for stretching exercises, spinal flexion, and extension.
Unlike other machines, it doesn't use the springs, focusing instead on maintaining the body's natural curves.
Another positive aspect is that it can be easily used, providing very good support for posture.