Doing ballet weekly sounds awesome. I think it's partly that the app's easy and medium sets are a reasonable match for my subjective easy and pushing-it-somewhat, and I like being able to opt out of a specific exercise, which feels harder for me with a YouTube video.

Also, depends on one's specific issues. For me, legs are mostly strong, back is okay (though it slips), neck and hips are terrible ... so I try to do mountain climbers and very careful side planks regularly alongside other things.

What do you do to warm up for ballet?--no worries if no answer.