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Your First Double-Unders: A Coach's Step-by-Step Plan from CrossFit BC. Still whipping yourself with the rope? Double-unders are coordination, not cardio. Fix your wrists, not your lungs.
How to Get Your First Double-Unders the Smart Way
This article is part of the CrossFit BC journal, written by the coaching staff who run our classes in Olympic Village, Vancouver. We publish what we teach on the floor: training decisions, recovery, nutrition, and the honest tradeoffs behind them.
A speed rope with adjustable length and lightly weighted handles. Coated cable spins faster and stings less than bare wire. Avoid heavy weighted ropes for learning — they hide bad mechanics.
Stand on the middle of the rope. The handles should reach the bottom of your sternum to your collarbone. Too long is slow. Too short clips the floor on every rep.
Because fatigue exposes mechanics. Under fatigue your shoulders rise, your wrists stop spinning, and you start jumping vertically instead of bouncing. Train tired on purpose so the pattern survives.
Daily for short bursts is best. Three to five minutes of skill work before or after class is enough. They are a nervous system skill — frequency beats volume.
You are jumping higher each rep instead of spinning the rope faster. Stay low and tight. The rope speed makes the rep, not the jump height.
Two reasons: rope is too long, or your wrists are stiff. Shorten the rope first. Then drill wrist-only spins without jumping until your hands learn the rhythm.
For an athlete with decent single-unders, two to six weeks of daily 5-minute practice is typical for first reps. Unbroken sets of 30+ usually take 2 to 4 months of consistent work.
No. Heavy ropes mask bad wrist mechanics. Learn on a normal speed rope. The skill transfers to any rope. Bad habits learned on a heavy rope do not.
Tense arms, high shoulders, and panic-jumping. Relaxed shoulders and a tight core lower the cost dramatically. Double-unders should feel light, not desperate.
Yes. They are one of the cheapest, most efficient ways to train coordination, calf strength, and conditioning at the same time. And they unlock dozens of CrossFit workouts.