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]
(..) 'owyn. Gandalf? Breathe the free air again, my friend. Dark have been my dreams of late. Your fingers would remember their old strength better... ...if they grasped your sword. I've only... ...ever served you, my lord. Your leechcraft would have had me crawling on all fours like a beast! (..)2002 The Lord of the Rings: The Two Towers
(..) So bright. So beautiful. Our precious. What did you say? Master should be resting. Master needs to keep up his strength. - Who are you? - Mustn't ask us. Not its business. Gollum. Gollum. Gandalf told me you were one of the river-folk. (..)2002 The Lord of the Rings: The Two Towers