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]
(..) But you just remember this, boy. You just remember, when they come in here and they tear this place apart board by board! You hear me? You are a man who's never had the strength to support his own life. Ellis. You'll return that motor from where you found it, and you'll apologize in person (..)2012 Mud