I found it’s a form of jargon, and once you know more about the field, it becomes much clearer.

Before I started working out at all, I found it really hard to follow any workout instructions (even videos). I couldn’t tell if what I was doing felt right or if my form was off in some important way.

After a few sessions with a personal trainer/physical therapist, and just getting comfortable with the sensations and movements, I found it much easier to figure out what I’m supposed to be doing from an instruction. I had more of the building blocks that I knew were correct already.

Text is still inherently a difficult way to instruct movements though.