Plank Hurdles

Done on a football field. In small groups of 5-6, everyone starts in the plank position in the end zone. 1st man from each group sprints to the 10 and planks, 2nd sprints, hurdles him, planks on the 20, 3rd man hurdles each, planks on the 30, etc. At the end of the group, 1st man sprints, hurdles everyone, etc. Everyone should finish in a plank in the opposite end zone.