He tried to open his eye, but the muscles wouldn't work.

She would have closed her eyes, but those muscles were no longer working, either.

He tried to lift his head, but the muscles would not work.

A muscle worked in his jaw as he took a step toward her.

I could see the muscles in his arms work even through the sweater.

He did not answer, but the muscles in his jaw worked.

Everyone's the better for doing some light work to get muscles working again.

His muscles still worked, though, for the moment, and so he hugged them.

He gazed straight ahead of him with that muscle still working.

I tried to give him a smile, but the muscles in my cheek weren't working.