Wall balls and box jumps

Wall balls :30 then box jumps :30 while partner rests, then switch, 10 rounds. It's only 10 minutes of work, how hard could it be?

Todd H: WB-143, box-109
Pete: WB-155, box-139

Soundtrack: Rage Against the Machine-The Battle of Los Angeles

Compare:
http://shiftfive.blogspot.com/2009/01/wall-balls-and-box-jumps-30-intervals.html