He sagged slightly as the tension went out of his muscles.
The girl was almost good, but not quite up to taking all the knots out of my muscles.
Slowly she felt some of the tension go out of his muscles.
Relieved, Richard let the tension go out of his muscles.
The part that I think you could have seen even from the back row is the smoothing out of her facial muscles.
It put snow in his hair, and took all the rubber out of his muscles.
It felt as if the rust were working out of his muscles.
"You need to work the stiffness out of your muscles."
He began stretching and bending, working the aches out of his muscles.
Finally, she stood up and stretched the kinks out of her muscles.