Endurance WOD Workout

In teams of 2 for 40 minutes:
1000 m row (alternate every 500 m)
80 air squats (alternate every 40 reps)
60 sit ups (alternate every 30 reps)
40 push ups (alternate every 20 reps)
20 pull ups (alternate every 10 reps)

Share the work as presented. One works, one rests.