move a muscle

[move a muscle] {v. phr.} To move even a very little. - Used innegative sentences and questions and with "if".

The deer stoodwithout moving a muscle until the hunter was gone.

The girls wereso startled that they did not move a muscle.

You're sitting rightwhere you were when I left! Have you moved a muscle?

The robbersaid he would shoot the bank worker if he moved a muscle.