Michigan State linebacker signee Antjuan Simmons had already finished his planks for the night, with his Total Sports Wixom trainer Nate Collins pushing his rear to the floor every step of the way. But as he sat on the edge of a treadmill, gassed, Simmons saw one of his workout partners still struggling to finish his reps. Collins wouldn’t let him stop until he did the brutal core workout to the trainer’s satisfaction. So Simmons got back down on the ground, lifted his knees off the floor and went back into plank position.
Source: Land of 10