How do us nomads who are constantly travelling stay fit? Do you join random gyms if you're staying for a couple weeks? Is there a app or service regarding this which is suitable for nomads?

CultFit

Was a cultfit member for a while back in 2019-20, now I would prefer regular gyms

I have struggled with this too.... And now I feel the only practical solution might be to have a home base and be disciplined with fitness while their... and then not worry while travelling!