For Time: 
30..27..24..21..18..15..12..9..6..3 calories rowed
Sled push down hallway between rounds
Heavy AF 

212-pounds (2x45, 1x35 plus sled)

The sled should be TOUGH - you may be able to keep it unbroken, but it will be a grind. Kept all but one round unbroken, but it was a slow and steady march down the hall each time.