Follow these three steps to measure the length of a jump rope that’s good for you: Swinging your entire arm is inefficient and you look plain dumb. HOW TO LEARN DOUBLE UNDERS STEP BY STEP Paradiso According to the mean of jump rope records, the children were divided into a superior ability group (more than average + 0.5 sd) and an inferior ability group (less than average − 0.5 sd) for each gender. How to measure jump rope for double unders . Stand on the jump rope in the middle of the cord with both feet. If you want to do a double under, you'll first need to master the single under. Eventually i’m going to want the jump rope to be about chest high. This is the size of the jump rope as it comes out of the packet. Practice until you can do consistent single unders with an efficient jump and spin. Unbreakable polymer plastic handles with dimpled grip and smooth plastic dowel. A rope that fits will reach your armpits at the handles. Jump normally to get warmed u...