Go For It! On a 12 Minute Clock, complete 30 seconds of work and rest 30 seconds. Alternate between: Max reps of Double Unders Max Calorie Row Complete 5 Rounds for Time: 50 meter Walking Lunge 50 meter Sprint 10 Knees to Elbows Related Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)