January 7, 2017 Jason Cain Filty Fifty January 7, 2017 Jason Cain 50 Box Jumps (24/20 in)50 Jumping Pull-Ups50 Kettlebell Swings (1.5/1 pood)50 Walking Lunges50 Knees-to-Elbows50 Push Press (45/35 lbs)50 Back Extensions50 Wall Balls (20/14 lbs)50 Burpees50 Double-Unders Jason Cain