With a partner or two:
Each person will row 500 meters 4 times.
After you row 500 m let next person row.
Your rest time is their row time.
When you all have finished, rest a couple of minutes, then run 400 meters as fast as possible
Log all of your times so you know what to beat next time.
Paul- Row 1:40/1:42/1:42/1:43
Red- Row 2:10/2:07/2:07/2:04