[masraum]

I agree that you need 2 things, strength and flexibility.

I think one of the best ways to get both at the same time is yoga. And yoga develops strength on a wider range of muscles (in some ways) than weights. Some of the balancing poses work the small muscles around the big muscle groups as well as the big muscle groups, where I feel like most weight exercises seriously target the major muscle groups really well but don't get the smaller muscles as well. Kind of like the difference between dumbell curls vs barbell curls.

But I feel like yoga doesn't get the biceps much.

If you want to try some yoga, check out this guy. I think he's a bit of a surfer/skater dude, but is pretty good about the yoga without too much touchy-feely stuff.
https://www.youtube.com/@yogawithtim/videos

If you want a more manly yoga, then I have had a buddy tell me that he likes this guy
https://ddpyoga.com/

This lady is also a good option.
https://www.youtube.com/@Tara.Stiles