I did indeed, a few years ago!

But Tumblr-search being its usual crappy self, I can't find the post I made anymore. Which is unfortunate, because it had a very elaborate text about how beneficial poledancing is for training your strength, endurance and mobility - especially because it would be extremely hard to do for Astartes, who are way heavier for their height than humans, because of the improved bone density and black carapace.

I may have lost the post, but here's the pic: Pre-Heresy Lucius doing poledancing.

Edit: Found it! It's less elaborate than I remember. But maybe I did the textpost to this later.