Now that the quarterback has recovered from his injury, this week the team will be functioning 'at full strength' again. [=the team will have all its players again]
We are negotiating from a 'position of strength'. [=from a strong position; from a position that gives us an advantage]
He didn't mean to knock you down; he just 'doesn't know his own strength'. [=doesn't realize how strong he really is]
(..) the Aether is fluid and everchanging. It changes matter into dark matter. It seeks out host bodies, drawing strength from their life-force. Malekith sought to use the Aether's power to return the universe to one of darkness. (..)2013 Thor: The Dark World
(..) That was not my intent. For the first time since Bifrost was destroyed, the Nine Realms are at peace. They're well reminded of our strength and you have earned their respect and my gratitude. Thank you. Nothing out of order (..)2013 Thor: The Dark World