The Speed Rope is a standard skipping rope on speed. The thin wire ensures maximum speed can be generated, which means the rope is fast enough to circle the body more than once per jump. The CrossFit dudes call these double-unders (or triple-unders) and they’re a big part of their training routines. Why? Because ten minutes of skipping is the equivalent of running a four minute mile. It’s a tough workout! Typically, a few minutes skipping is enough to get the heart pumping. It also has the advantage of being able to be performed in confined spaces. You only need a small space and you’re set to go. Also, proper skipping technique promotes better knee health. By pushing off from the balls of your feet, you reduce the repetitive shocks that are typically caused by running. Bottom line? Speed rope skipping gives you a killer workout. Plus you get an endurance workout, mixed in with a coordination element and agility work with your feet.