Why does the left focus less on fitness?

I think at this point it has become pretty obvious that there exists a kind of gym-altright pipeline, anyone who follows fitness influencers on social media will soon run into some pretty right wing stuff. A far higher percentage of social media personalities on the political right focus on things like physical exercise than the left.

I also personally notice in real life a pretty noticeable relationship between physical conditioning and politics, the right simply put is fitter than the left.

Do you agree with this observation? Why do you think this is the case? Should the left campaign more on improving physical health?