7 collocations for flex

Here they recounted their exploits, bragged of their triumphs, boasted of their girls, flexed their muscles to show their strength.

Grasp with the right hand the calf of the extended right leg, and vigorously flex the leg, bringing it near to the body.

He slowly flexed his knees and looked into the man's eyes.

Moreover he must grip the branch on which he sits more or less firmly with his claws, to keep from falling; and the tense muscles, which flex the long claws to drive them into the wood, soon grow weary and numb in the bitter frost.

Extend and flex the fingers vigorously.

This muscle flexes the second phalanx on the first, the first on the metacarpus, and the entire foot on the forearm.

"You have tofeel it," he said, flexing his wrist.

7 collocations for  flex