His body, for just a moment, shook so that he almost lost his balance on his precarious perch, as the Flexed emotions that had keyed him to the point of homicide burst into relief like a released spring ...
"The Tempering"
Charles Neville Buck
His hand hurt; he saw that it was bleeding and Flexed it experimentally, trying to determine that no tendons had been injured.
"The Planet Savers"
Marion Zimmer Bradley
Jerry Webster Flexed an arm that appeared to be aching.
"The Electronic Mind Reader"
John Blaine