She's been doing exercises to become stronger and more 'flexible'.
This computer program has to be 'flexible' to meet all our needs.
Whatever you want to do is fine with me. I'm 'flexible'.
(..) . . .but the point is. . . . . .you can no longer feel any pain, and, very clearly, the bones are not broken. Broken? There's no bones left. Much more flexible, though. Mr. Malfoy, stop making such a fuss. You can go. Out of my way. Should have been brought straight to me. (..)2002 Harry Potter and the Chamber of Secrets