Your arms begin to hurt in pliés.

You wake up the next morning and can't get up because you're so sore.

You have to ice and self massage constantly.

Weird leg cramps, for instance my left calf would not stop hurting.

Owwww

Halfway through a combination you just blank out on the what you were supposed to be doing.

You can't remember any French terminology but you know it's somewhere in there.

Um, wait we're supposed to do that?

Wait a sec, what where the body facings again?

I have no idea what the next step is, does anyone else know it?  Nope, well let's ask the teacher.