Last night I got schooled in the proper motion of the foot in a tendu. I don't have great arches to begin with, and even less flexibility in my ankles. But I tried. I really did. And I think the instructor understands my limitations. But I really worked at it.
When I got home last night I crawled into bed, wrote up last night's post on my laptop, rolled over and passed out. I even forgot to plug in my phone to charge. This morning when I woke up the first thing through my mind was, "Oh bloody hell, my FEET HURT!!" Not in a way that suggests I've injured something. But the medial longitudinal arches of both feet hurt.