Row Conditioning 
8 Rounds
3:00 @ r24
1:00 @r28
1:00 active rest

More aggressive strokes at pressure supplemented with a minute of active rest to maintain composure. Active rest should keep the heart rate up while allowing you to recover for the next set. I set the drag to 100, and intentionally rowed a couple of beats slower than intended, as this session was part of the 12K required for the C2 AF Challenge today.