How do rhythmic gymnasts become so flexible?

Well, Rhythmic gymnasts are not just naturally flexible they stretch and stretch and stretch. Some rhythmic gymnasts are more flexible in their legs and to be able to to those amazing split leaps they stretch a lot! And others are way more flexible on their backs. There are also people who are just good at both leg and back flexibility. But remember rhythmic gymnasts have VERY strong core muscles which helps them balance, turn, hold their flexibility skills and jump.