Let’s ruin our knees:) Date Published: October 11th, 2015 Complete as many rounds as possible in 12 mins of: 150 Wall Balls, 20/14 lbs 90 Double Unders 30 Muscle Ups Rest 4min Complete as many rounds as possible in 12 mins of: Runs, 400 m 25 Kettlebell Swings, 54/35 in