Today's Workout 060513By Chris Cooper / June 5, 2013 "Filthy 50" 50 Box Jumps 50 Jumping Pullups 50 Kettlebell swings (53/35) 50 Walking Lunges 50 Knees-to-Elbows 50 Push Presses (45) 50 Back Extensions 50 Wall Balls 50 Burpees 50 Double-Unders …for time.