Jump Rope Double Under

Swing the rope with your wrists rather than big arm circles, keeping your elbows close to your body. Jump only high enough to let the rope pass twice under your feet in the time you'd normally give it once, a small quick hop rather than a big bound. Speed up the wrist turn as you jump instead of trying to jump higher; the extra pass comes from a faster rope, not more air time. Land softly on the balls of your feet and let your ankles absorb the landing so your knees aren't taking the repeated impact. Keep your core braced and your torso upright rather than leaning forward to chase the rope around.