Filthy 50By Jessica Thomas / April 21, 2015 “Filthy 50” For time: 50 Box Jumps, 24/20 in 50 Jumping Pull-ups 50 Kettlebell Swings, 35/26 lbs 50 Walking Lunges 50 Knees To Elbows 50 Push Press, 45/35 lbs 50 Back Extensions 50 Wall Balls, 20/14 lbs 50 Burpees 50 Double Unders