The man was watching the younger engineer and flexing his hands unconsciously.

White Wolf saw the men flex their arms, keeping the muscles loose and the blood flowing.

Beyond them, a well-oiled black man in a G-string turned and flexed his buttocks.

He picked it up and flexed it a bit, as a man might flex a rapier to test its material.

For another, he abruptly realized as the men flexed to pick up objects that each man's outfit was all of one piece of material.

The man flexed his bushy gray eyebrows once, then twice, and finally spoke.

The man flexed and opened his fingers; the coin disappeared.

The second man flexed his sore arm and lifted the cudgel, looking eastward into the darkness.

The man flexed his knees, pulling his feet back so he could lean forward.

The old man flexed his arms again and groaned a little.