Press-ups, chest to floor, 12 sets to failure, 4 minutes = set + rest: 21-12-11-10-10-9-8-8-8-7-7-7. 118 in total.

I have spent a while opening a door with a brocken lock - the rotating bit had detached from the bit that sticks into the metal bracket in the door frame. I eventually managed to break the bracket by bending it back and forth until metal fatigue set in. Hard work!