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]
(..) - Good for you. I figured you guys might be able to give me some pointers. I need to shape up, fast. Are you looking to just lose weight, or do you want to have... increased strength and flexibility as well? I... I want to look good naked. Hey! Yo, Ricky. My entire life is passing before my eyes, (..)1999 American Beauty