Filthy FiftyBy Jessica Thomas / May 5, 2016 “Filthy Fifty” For time: 50 Box Jumps 24/20″ 50 Jumping Pull-ups 50 Kettlebell Swings 16/12kg 50 Walking Lunges 50 Knees-to-elbow 50 Push Press 45/35# 50 Back Extensions 50 Wall Balls 20/14″ 50 Burpees 50 Double-Unders