Muscle-Ups & Box Jumps Posted on August 21, 2014 by Matt FRIDAY 220814 For time: 36 box jumps, 30/24′ 12 muscle-ups (36 pull-ups) 27 box jumps, 30/24″ 9 muscle-ups (27 pull-ups) 18 box jumps, 30/24″ 6 muscle-ups, (18 pull-ups) 9 box jumps, 30/24″ 3 muscle-ups (9 pull-ups)