Whipped your shins one too many times?
Do you find that you jump like a perfectly normal human being… until someone puts a rope in your hands?
I see this all the time. Suddenly, the jump gets weird, the elbows flare out, the chin drops, and what was supposed to be a smooth rotation becomes you essentially whipping yourself repeatedly in the shins while the people on either side of you inch quietly away.
Here’s the thing: this isn’t a fitness problem. It’s a coordination problem, and coordination is trainable. Double-Unders are the most commonly scaled movement in CrossFit® not because they’re genuinely that hard, but because most athletes try to learn them by just jumping more, which is like trying to learn to juggle by throwing things faster. You need the right mechanics, in the right order, and that’s exactly what this guide gives you.
This is the complete WODprep 4-Phase Double Under Method. Whether you’ve never hit a double under in your life or you’ve been stuck at “occasionally get one by accident” for longer than you’d like to admit, this progression will get you to consistent, unbroken sets.
Most athletes try to learn Double-Unders by jumping faster. That’s not what makes a double under work. It’s the wrist rotation and jump timing that matter, and once you understand that, the whole movement changes.
How to Do Double-Unders | Step-by-Step CrossFit® Tutorial
Why Double-Unders Are So Frustrating (It’s Not What You Think)
The rope needs to pass under your feet twice in the same amount of air time as a single under, which means the timing margin shrinks dramatically and any inconsistency in your jump, your wrist rotation speed, or your body position gets amplified into a rope catching your shins. That’s the physics of why they trip you up.
What makes it worse is the natural response: panic-jumping. The moment athletes sense the double under is about to go wrong, they jump higher, which causes them to pike their knees up, which changes the arc of the rope, which makes the whole thing fall apart even faster. The harder you try to save a bad rep, the worse it gets. If you’ve ever been in a workout where you had 50 Double-Unders and watched in horror as you somehow made it take four minutes, you know exactly what I’m talking about.
The actual fix is the opposite of what instinct tells you. A tighter, smaller jump. Faster wrists, not faster feet. A straight body that keeps the rope arc predictable. None of these are complicated things to do. They just need to be built in the right order, which is what the 4-Phase Method is designed to deliver.
My 6 Best Tips to Learn Double-Unders FAST
The WODprep 4-Phase Double Under Method
This progression has helped thousands of athletes across the WODprep community go from zero Double-Unders to doing them in workouts, and it works because it builds each physical quality in the order that makes the next one easiest to add. Skipping phases creates problems that take longer to fix than just going through the progression properly. Trust me on this one.
Phase 1: Efficient Single Unders (Not Optional)
Before you start attempting Double-Unders, your single unders need to be genuinely efficient. I know that sounds boring and you want to skip to the good bit, but if your singles are sloppy, your doubles will be chaos. This isn’t about whether you can do singles. It’s about whether you’re doing them with the specific mechanics that transfer into the double under.
Three things to nail in Phase 1: a jump that stays small and controlled, roughly one to two inches off the ground, feet together, body upright, rather than the big bounce most people default to. Hands roughly at hip height with your forearms at a slight outward angle, not wide away from your body. And the rope turning from your wrists rather than your shoulders, which you can check by seeing if you can speed up and slow down the rope without moving your arms at all.
Practice for 3-5 minutes per session until you can do 50 consecutive singles with minimal effort, your jump stays small and consistent, and you have genuine control of your rope speed from the wrists. When all three are true, you’re ready for Phase 2.
Phase 2: The Power Jump
The power jump is the specific jump you’ll use for Double-Unders, and it’s slightly different from your single under jump in one important way: you need just a touch more height to give the rope time to pass twice. The key word is a touch. We’re talking about going from roughly one to two inches to roughly two to four inches of clearance. That’s a subtle change, but it’s the one athletes consistently over-exaggerate by about five times, which is how you end up doing the kangaroo impression.
The drill to get this right is the bounce drill: jump with the cadence of one big, one small, alternating. Power jump, single, power jump, single. This trains your legs and timing to produce the slightly bigger jump on demand without changing anything else. On the power jump, your wrists also need to rotate slightly faster to complete two passes in the same air time. Add that in once the jump rhythm feels natural.
At this stage you’re still not doing Double-Unders. You’re teaching your body the specific combination of a controlled bigger jump and faster wrist rotation that makes a double under possible. Get this right and the double under itself almost falls into place.
Phase 3: Your First 10 Unbroken
This is where it actually starts happening. The target is 10 consecutive Double-Unders with clean mechanics, not tripping, not piking, not doing what one of my athletes once called the “panicked starfish” where both arms flail out to the sides.
Before every practice session in this phase, spend 2-3 minutes on penguin jumps: jump and clap your hands against your thighs twice before you land. It looks unhinged. It works. It forces your body to coordinate the wrist rotation timing with the jump without any rope to trip on, so when you add the rope back the motor pattern is already partially there.
When you start attempting actual Double-Unders, do them as singles: one double under, land, reset, try again. Don’t try to link them yet. Athletes who spend a week on single Double-Unders before attempting sets consistently learn faster than athletes who chase sets straight away. The motor pattern needs to be automatic before the linking timing challenge gets added on top.
The Phase 3 benchmark: 10 consecutive Double-Unders with controlled mechanics, at least 8 times out of 10 attempts. That’s the bar. Hold it before moving on.
Phase 4: Sets of 50 Under Fatigue
Getting to 50 unbroken Double-Unders is mostly about building the endurance and consistency that comes from volume at the right intensity. The trap in Phase 4 is practising Double-Unders when you’re already cooked from a full workout, which reinforces bad mechanics because tired bodies revert to compensations. Do your double under practice at the start of sessions when your mechanics are sharp.
EMOMs are your best tool here. A 10-minute EMOM of 15-20 Double-Unders per minute builds both the volume capacity and the ability to re-enter the rope efficiently after a rest, which is a skill that rarely gets attention but matters more than most people realise. The athletes with the biggest unbroken sets aren’t the most coordinated people in the gym. They’re the ones who’ve mastered what I call the reset and re-enter: tripping, taking one or two singles to re-establish rhythm, and then flowing back into doubles without panicking. That recovers a bad rep into a brief interruption instead of a complete collapse.
Best Jump Rope For Double-Unders (CrossFit® Beginner Focused)
The 5 Most Common Double Under Mistakes (And What to Do Instead)
I’ve watched a lot of athletes learn Double-Unders. These five mistakes come up constantly, and the good news is they all have specific fixes.
Mistake 1: The Hulk Jump
You sense a double under attempt coming, and your body’s solution is to launch itself skyward like you’re trying to reach a top shelf you can’t quite get to. The result is a massive jump, knees pulling up toward your chest, a completely changed rope arc, and either a whip to the shins or a thud back to earth. I see this in about 80% of athletes who are learning.
The fix is to actively do less. Smaller jump, faster wrists. The rope speed creates a successful double under, not the jump height. Film yourself from the side and check whether your body stays straight in the air. If you’re pulling your knees up, your jump is too big, full stop.
Mistake 2: Helicopter Arms
This one usually shows up once athletes have a few doubles but can’t link them. The arms drift wide and start generating the rope speed from the shoulders rather than the wrists, which turns each rep into a big sweeping movement that’s exhausting to maintain and impossible to time consistently. You’ll recognise it because sets of Double-Unders feel like a serious upper body workout even though they shouldn’t.
Keep your hands at hip height with your elbows close to your sides. The rotation comes from the wrists only. Test it: can you change your rope speed without moving your arms? If you can’t, your wrists aren’t doing enough work.
Mistake 3: Staring at the Floor
This is the instinctive response to not being sure where the rope is: look for it. The problem is that dropping your chin rounds your upper back, which changes your shoulder position, which affects the rope arc. Athletes who watch the floor tend to have wildly inconsistent rep-to-rep timing because their body position is subtly different every single jump.
Eyes forward, neutral horizon. Trust the feel of the rope rather than trying to watch it. This is one of those things that feels strange for about a week and then becomes automatic. The consistency improvement once athletes fix their gaze position is usually immediate.
Mistake 4: Rushing to Link Before You Own the Single Rep
There is a huge difference between “I can occasionally string together 5 Double-Unders” and “I own the single Double-Under rep.” Athletes who try to chase big sets before they can hit a single rep reliably on demand are basically trying to learn to sprint before they can run. Every failure in a linked set reinforces the wrong pattern.
If you trip within the first 3-5 reps on almost every attempt, go back to single-rep practice. You want to be able to hit a clean single 9 times out of 10, eyes closed, without thinking about it, before you start worrying about linking.
Mistake 5: Only Ever Practising When Fresh
If every time you practice Double-Unders you’re rested, warm, and mentally sharp, you’ll build a skill that completely disappears the moment a workout puts any fatigue into your system. Double-Unders require a specific level of motor control that degrades faster than raw fitness, and if you haven’t practised under fatigue, the first conditioning workout that challenges you will expose that gap in the worst possible way.
Once you’re in Phase 4, add a specific block of double under practice after a moderate piece at least once a week. Even just 3-5 sets of max unbroken attempts after a short workout is enough to start building the fatigue-resistant version of the skill, which is the one that actually shows up in competition.
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A 4-Week Plan to Get Your First 50 Unbroken Double-Unders
Three sessions per week, 10-15 minutes of dedicated double under work at the start of each one. Follow the phases in order. The goal by the end of Week 4 is a set of 50 unbroken with controlled mechanics.
Week 1: Build the Foundation (Phase 1 + Phase 2)
Two sessions on Phase 1, one session introducing Phase 2.
Session A: 5 minutes of deliberate single unders using Phase 1 mechanics. Count your longest unbroken set. Then 5 minutes of bounce drill, alternating power jump and single. The jump difference should start feeling real by the end of this session.
Session B: Same as Session A. By now the mechanics should feel more natural. Check your wrist position and make sure the rope is turning from the wrists, not the arms.
Session C: 10 minutes of bounce drill only. Start adding the double wrist rotation on the power jump reps. You’re not doing Double-Unders yet. You’re training the coordination that makes them possible.
Week 2: First Reps (Phase 3 Entry)
Two sessions of single-rep Double-Under practice, one session introducing short sets.
Session A: 3 minutes of penguin jumps, then 7 minutes of single-rep Double-Under practice. One rep, land, reset, repeat. Track your success rate. A solid Week 2 target is 6 to 7 successful singles out of every 10 attempts.
Session B: Same structure. Film yourself if you can. At this stage the failure is almost always either not enough wrist rotation speed or arms drifting wide on the power jump.
Session C: Start attempting sets of 3 to 5. If your single rep is reliable, the step to a small set is straightforward. Consistent sets of 5 is the Week 2 goal.
Week 3: Build Sets (Phase 3 Completion)
Three sessions focused on building toward 10 unbroken.
Session A: 10 minutes of alternating max sets and 30 seconds rest. Record your best set. Target: 10 unbroken with clean mechanics by end of week.
Session B: Same structure with 3 minutes of penguin jumps at the start. If you’re tripping at the same point in every set, that’s a re-entry timing issue, not a strength issue. Focus on re-establishing your rhythm after each trip rather than launching straight back in.
Session C: 10-minute EMOM of 10 Double-Unders on the minute. If 10 feels comfortable, increase to 15. This is your bridge into Phase 4.
Week 4: Volume and Fatigue (Phase 4)
Two dedicated double under sessions and one post-workout session.
Session A: 10-minute EMOM of 20 Double-Unders per minute. Rest the remainder. Track how many minutes you complete cleanly. Target: 7 or more clean minutes out of 10 by end of the week.
Session B: Max unbroken Double-Under attempts with full rest between. Your Week 4 target is a set of 50. Don’t panic-recover if you trip. One or two singles to reset, then flow back in.
Session C: After a moderate conditioning workout, 5 sets of max unbroken Double-Unders with 45 seconds rest between. This is your first real test under fatigue. It will expose gaps, and that’s the point.
Jump Rope Buying Guide: What Actually Matters
The rope you use genuinely matters. A rope that’s the wrong length or weight will fight you through every phase of the progression, while the right one will feel like a completely different skill. This isn’t a sales pitch, it’s something I see cause real problems for athletes who are learning.
Rope Length
When you stand on the middle of the rope, the handles should reach your armpits. This gives a generous enough arc for beginners. As you get more proficient, a lot of athletes shorten their rope by a few inches because a tighter arc requires less wrist rotation speed per rep, which makes longer sets significantly less tiring.
Rope Weight
Speed ropes with thin cable are the most common choice in CrossFit® gyms because they’re the fastest and most efficient. The one downside for beginners is that because they’re light, you get less sensory feedback about where the rope is in space. Heavier cables give more feedback and are genuinely useful at the learning stages. Once your timing is established, a standard speed rope is almost always the better choice.
What WODprep Recommends
For learning: a mid-weight speed rope such as the Rx Smart Gear or similar, at armpit height. For building volume: a lightweight speed cable at slightly shortened length. For competition: whatever you’ve practiced with most. Don’t change ropes within two weeks of a competition. The different arc and feedback will mess with timing it took you months to build.
Double Under Workouts That Actually Build Capacity
These formats develop double under capacity more effectively than just using Double-Unders as one element in a general workout where they end up getting done badly under fatigue.
The Volume Ladder
12-minute running clock. Every 2 minutes: 20 Double-Unders, then 10, then 5, resting the remainder of each window. The ladder structure means you’re practising three different set lengths in each window, which builds both the ability to start cold and the ability to manage a longer set when you’re already moving.
The EMOM Builder
10-15 minute EMOM: odd minutes, 20 Double-Unders. Even minutes, 10 Double-Unders plus 10 air squats. Returning to Double-Unders after the squats with a slightly elevated heart rate simulates the workout context where they show up after other movements have already taxed you. This is a much more useful training stimulus than just doing a straight block of Double-Unders when you’re fresh.
The Unbroken Challenge
One max unbroken set per day for 7 days. Record your best each day. Most athletes see measurable improvement within a week of this kind of focused daily practice, and it’s also excellent for rebuilding confidence with a movement that’s been a source of frustration.
How To Learn Double-Unders: FULL WODPREP SEMINAR w/ Real Athletes!
This is a complete WODprep double under seminar filmed with real athletes in real time. The most thorough video breakdown of the movement we’ve produced.
This article’s part of a series to help you go from 0 to 100 double unders – and beyond! Continue reading today:
- My 6 Best Tips to Learn Double Unders FAST
- Double Unders: Fix These Jumping Mistakes (to hit a PR!)
- How To Learn Double Unders Before The CrossFit® Open!
- How to do Heavy Rope Double Unders from the CrossFit® Games
- What Exactly Are Double Unders? The Mystery Solved
- From Basic to Awesome: A Guide to Jump Rope Variations Plus Benefits!
- Jumping to New Heights: Step By Step Guide to Crossover Single Unders
- Master the Art of Triple Unders: A Step-by-Step Guide
- Double Unders: Go from 10 to 100 UNBROKEN! (5 Tips)
- How To Do Double Unders – 3 Dynamite Tips!
- Single Unders: Your Double Unders Missing Link
- Double Unders For Beginners: A 7 Step Progression To Mastery
FAQ: Double Under Questions Answered
How long does it take to learn Double-Unders?
For an athlete with no double under experience who trains specifically for them, the honest timeline is 2-6 weeks to get your first consistent reps, and 6-12 weeks to build sets of 20-30 unbroken. The range is wide because it depends heavily on jump rope experience, coordination, and how much dedicated practice happens between general CrossFit® sessions. Athletes who do 5-10 minutes of specific double under work at the start of three sessions per week learn significantly faster than athletes who only attempt them during workouts.
Why do I keep hitting my feet even though I’m jumping high?
Jumping high is almost certainly part of the problem, not a solution to it. When athletes jump too high they pike their hips, pull their knees up, and completely change the arc the rope travels through, which makes the timing much harder to nail. The fix is a smaller jump with faster wrist rotation. The rope speed creates a successful double under. The jump height doesn’t.
I can do Double-Unders when I’m fresh but lose them completely in workouts. Why?
Because Double-Unders require a level of motor control that degrades faster than raw fitness when you’re under fatigue. When you’re tired, your jump height becomes inconsistent, your rope tension changes, and your timing drifts. The fix is to specifically practise Double-Unders after other fatiguing movements rather than only when you’re fresh, and to develop the reset and re-enter skill so that when you trip under fatigue you can recover quickly rather than spiralling.
What’s the substitution for Double-Unders if I can’t do them?
The standard CrossFit® substitution is triple the single unders, so 50 Double-Unders becomes 150 singles. This keeps the time domain roughly in the right ballpark. That said, if you’re actively learning Double-Unders, a better option is to attempt them at a reduced rep count. The practice reps in a workout context are genuinely valuable, and the only way to get better at Double-Unders under fatigue is to actually do Double-Unders under fatigue.
Can I learn Double-Unders without a coach?
Yes, and thousands of athletes have done it with the WODprep 4-Phase Method and our Double Under Foundations course. The one thing a coach provides that video can’t fully replace is real-time feedback on your jump and rope position. The best self-coaching tool available is filming yourself and watching back. Most athletes are shocked by the difference between what they thought their jump looked like and what it actually looks like on camera.
Do I need a special rope?
Not special, but the right one matters. A mid-weight speed rope at the correct length is the best starting point. Avoid very thin, light cables at the learning stage because the reduced feedback makes timing harder to develop. Once your mechanics are established, a lightweight speed cable at slightly shortened length will feel significantly more efficient.
How many Double-Unders should I be able to hit before attempting them in a workout?
A reliable set of 10 is the minimum. Below that, attempting them in a workout is more frustrating than productive. A set of 20 to 30 is a more comfortable foundation that lets you actually move through the workout rather than spending most of it resetting the rope. The goal isn’t just to survive a workout with Double-Unders in it. The goal is to use the workout to build your skill.