“The Filthy Fifty” For time: 50 Box jumps 24″/20″ 50 Jumping Pull-ups 50 Kettle Bell Swings 53/35 50 Steps Walking Lunges 50 Knees to elbows 50 Push Press 45 pounds 50 Back Extensions 50 Wall Ball Shots 20/14 50 Burpees 50 Double-unders