It's not just the flexibility but the amazing STRENGTH to do that. Usually people don't realize this, but to do anything like that or even things that are less extreme like ballet requires a lot of strength. For instance, I'm much more flexible than you might realize because I can bend all kinds of ways and do a lot of things in my ballet class - But I'm not strong enough to do them as well as I will be able to.
I'm a boy, by the way.
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