Well, I have totally un-earned flexibility and I do yoga, so I guess I'll weigh in.
I use yoga as a spiritual discipline in a way. Bear with me, here, because it's probably not as weird as you're thinking
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Yes, I can do some of the circus poses -but not usually without effort. All of yoga -even tadasana(mountain pose) and staff pose and child's pose- take effort and concentration and staying right there in that moment. NOT my strong suit. Sometimes in savasana (relaxtion/corpse pose), I find myself planning my grocery list or transitioning into the meeting that comes after the yoga class..... It's an interesting and valuable process for me (one of those hugely scattered people who still manages to get a lot done) to pull myself back into that one place of meditation -again and again and again.
But on the physical level, which I'm sure is what you wanted to talk about, I know that I'm not as flexible now as I was when I was twenty. So I am working on flexibility -just starting from a different place than some people. And, as the people in the yoga check-in have reason to know- I REALLY struggle with the strength poses. Even the comparatively simple ones are hard for me.
So, the answer to your question is yes
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I'm working on all those things: flexibility, strength, and finding my very elusive center.
I hope that helps.
Andrea