Box Jumps, Burpee, Knees-to-elbow, Toes-to-bar, Pull-upBy Jessica Thomas / November 26, 2015 Max Height Box Jumps THEN Burpee/Knees-to-Elbows/Toes-to-Bar/Pull-up x 50 For the rep to count, you must not come off the bar until all 4 parts of the combo are completed.