While yoga seems like a salutary way of spending time, I woudn't call that sport. Clear win-states and competition seems crutial to sport.

And that's why sport for rationalists is someting so hard to come up with and so valuable - it needs to combine the happiness from the effort to be better than others, while battling the sense of superiority, which often comes with winning.

Sense of group superiority is to me the most revolting thing about most sports.