For many swimmers, the word "butterfly" brings a sense of dread. Coaches often see faces fall the moment it's written on the workout board. But this fear is totally unnecessary.

The secret to butterfly isn't brute strength; it's technique. Without the proper rhythm and timing, it is indeed the hardest stroke. However, once you grasp the basics, you'll find it's a smooth, powerful, and surprisingly efficient way to move through the water. This lesson will break down the top five most common mistakes that make butterfly scary and show you how to fix them.

Dive Into: Fixing the Top 5 Butterfly Mistakes

Mistake #1: Lifting Your Body to Breathe

Many coaches compare butterfly to breaststroke in terms of timing, but this can be misleading. The coach who tells you this, usually means it in a good way in terms of the undulation and timing, however, what coaches often fail to consider is the other aspects of the stroke.

The biggest problem is that a swimmer moves his/hers head to breathe in butterfly, as opposed to breaststroke where your head and spine are connected and move as a whole.

While swimming butterfly, if you keep your neck and spine stiff and move them together when you go for a breath, you will have to exert much more energy to get your body out of the water.

Instead, let your neck do the work. Leave your body in the water and focus on extending your chin forward along the surface to get that needed breath. Imagine if you had no hands, your nose would need to be the first part of your body to touch the wall. Forcing your chin forward (skimming the surface of the water) is much easier than lifting your body out of the water and it requires almost no hard physical effort, just a mental one.

head position in butterfly
Keep your chin low in butterfly

Mistake #2: The High, Bent-Arm Recovery

This is a very common mistake. A swimmer tends to recover their arms over the water in a freestyle-like position, with bent elbows and palms facing down. It almost looks like they are trying to jump over an invisible obstacle. The problem with that is that the swimmer again goes too far out of the water.

badly bent arms by rgtmum
badly bent arms by rgtmum

Instead, keep your arms straight when they are out of the water. Keep your palms facing backward and your thumbs pointing down, barely skimming the surface.

Have you ever seen how Asian street vendors make pancakes? A small ladle of dough is poured on a hotplate and then a wooden or plastic flat stick is used to spread the liquid dough around the hot plate.

Making pancakes like a pro
Be a pancake, be a pro swimmer

Imagine your arms are like the flat stick used to spread pancake batter on a hot plate, low and wide. If you bend your elbows, you'll miss the batter. Or, think of your arms as a hovercraft, staying nice and flat right on top of the water.

Mistake #3: Incorrect Head and Arm Timing

If you watch experienced butterfly swimmers very closely, you will see that after a breath, their head goes back into the water first, before their arms. A common mistake is for the head to enter the water after the arms are already in.

Next time you swim butterfly, notice what your head is doing. Is it late, or is it properly leading your body wave into the water?

Think of it in terms of head first, then arms. Your head is what leads the way for the arms.

This is not as hard to fix as you might think. Start by making sure you exhale all your air while underwater, so all you have to do is inhale when your head is above the water. This will make your breath much quicker.

Or alternatively, try to initiate the head lifting earlier in the stroke.

breathing too late in butterfly - big mistake
First head then arms

Mistake #4: The Exaggerated Knee Bend

The timing of a butterfly kick is for another post, but the key takeaway is that your knees are not to be overtly bent.

I see it over and over: when a swimmer goes for a breath, they totally bend their knees, which drives their hips down and causes them to dive deep under the water.

Your up-and-down oscillation should be very small and stay right at the surface to minimize drag. If you bend your knees too much, you will end up in an almost vertical position. This is no good.

To help you with the knee bend, consider using shinfin™ leg fins. These are great for helping you initiate the kick from your hip, not your knees.

Bonus Mistake #5: Rushing the Glide

Even if you fix all the flaws above, one big mistake can still sabotage your butterfly: rushing the glide.

This happens when a swimmer reaches forward and immediately starts the next pull, without any patience at the front of the stroke.

The hidden secret to the butterfly rhythm is a small, patient pause at the front. This is not a dead stop; it's a moment to let the body wave travel from your chest down through your hips. This glide gives your body time to set up for the next powerful pull.

Think of it this way: you need to press your chest down into the water and shift your weight forward. This action is what allows your hips and legs to rise to the surface, creating the "high hip" position you need for the next kick.

So, don't rush it. Be patient at the front, and let the rhythm work for you.

Next time you swim butterfly, think of these pointers. Are you making it harder for yourself than it actually is?

Frequently Asked Questions

Why does swimming butterfly feel so hard?

It's almost always due to poor technique and timing, not a lack of strength. Without the proper rhythm and body undulation, swimmers fight the water and exhaust themselves. With good technique, it becomes a smooth and powerful stroke.

Should I lift my whole body to breathe in butterfly?

No. Unlike breaststroke, your head should move independently with your neck. Extend your chin forward along the water's surface to breathe, rather than lifting your entire upper body out of the water, which wastes energy.

How should my arms recover over the water?

Your arms should recover low over the water with your elbows straight and your palms facing backward. A common mistake is bending the elbows and having palms facing down, which creates drag and inefficiency.

What is the correct timing for the head and arms?

Your head should always lead your arms into the water. After taking a breath, your head must enter the water before your arms do. This simple timing cue initiates the body's downward undulation and is key to the stroke's rhythm.

How much should I bend my knees in the butterfly kick?

Very little. An exaggerated knee bend leads to a large, inefficient up-and-down motion that creates drag. The kick should be a small, powerful oscillation that starts from the hips, not a big bend at the knees.

Why shouldn't I rush the front of my butterfly stroke?

Rushing the glide is a major mistake. You need a patient pause at the front to allow your body wave to travel through your hips. This sets up the 'high hip' position needed for a powerful kick and prevents you from fighting the water.

Swim Advice Topics

Why Is Swimming Butterfly So Scary? (Top 5 Most Common Butterfly Mistakes) is part of the following categories: Butterfly and is meant for swimmers in: Level 3 - Intermediate, Level 2 - Beginner

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Comments (18)

Anonymous said...
useful tips !!
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Staucott said...
Get Tip on skimming your chin along the water when breathing !
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Staucott said...
Great tip in skimming your chin along the water when breathing !
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Anonymous said...
Thank you for posting. I have been trying to learn butterfly for several months now and I think I am doing everything you listed the wrong way. Cannot wait until tomorrow to try out the tips!
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Libor J said...
@Anonymous: good luck. Hope it works out for you. Do not be shy about asking more questions if something is unclear.
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Devin Jones said...
Hello, I am 14 and get super tired after swimming butterfly. I try to do everything right and my coach says that I look ok in the water. Is there a way I can use less energy yet still go fast-ish in the water.
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Libor J said...
Hi Devin, thank you for your question. The energy expenditure is very much about the timing and rhythm. Working on your undulation and breath timing could help. Also, make sure to stay close to the surface when you breathe (do not go up too high - that could be a possible issue). Without a video - very hard to say :). Hope it helped at least a little.
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Ekot 0419 said...
Imo. Kicks are the key to this stroke. I aoent 6 weeks doing nothing but fish stroke. Also plenty of kicks drills. Once you mastered that. This is half the stroke right there. But at least I managed to swim about 400m after 6 weeks. Versus 25m and I was dead.
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Mike Timny said...
Any help would be greatly appreciated. My 16 yo old son just started swimming the butterfly at the end of last year. He did quite well, but he has one glaring flaw that we cannot seem to fix. He pulls way too far out of the water. His chest comes out of the water. He spends too much energy lurching out of the water instead of propelling himself forward. We are going to try #1, but I am not sure if it will be enough.
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Libor J said...
@Mike Timny - the key here is to work on a shallow undulation. Try having your son just undulating in a streamline (face down) without getting the top of his cap wet. Meaning, undulating only from chest down. Then add an arm pull with a chin up on top of the water (not an entire stroke, but only from arms forward to hands at the butt). And again, during undulation, move the arms back under water to streamline and then again lurch forward with the arm pull and chin pushing forward at the surface. Hope it makes sense.
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Richard Aukland said...
Hi. Im 45 and swim twice a week. I can swim 3k front crawl no problem. I am very tired after 50m fly. Im thinking of swimming 560m fly for a charity event in 6 months. Do you think this is possible?
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Libor J said...
@Richard Aukland - thanks for asking. Anything is possible :). With the right training and advice, you can do it. My suggestion is, work on your undulation and then your rhythm. With those two mastered, you can swim butterfly for a long time without being a tired. Good luck
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Richard Aukland said...
@Libor J. Hey just to give you an update. I have spent a couple of hours each week focusing on fly drills focusing on the undulation like you said (LOADS of kick drills). Then doing 25s and attempting 50s. Anyway, this week I managed to break the 50m barrier for the first time and have just cracked 100m . Looking forward to taking it further in Feb! Cheers
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Libor J said...
Hi Richard, thanks much for coming back and giving us the low down on your progress. Sounds like you are doing well. This could be a good drill for you to try: https://www.youtube.com/watch?v=vJKMQ3w7NV4 Have fun
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Libor J said...
Hi Richard, thanks much for coming back and giving us the low down on your progress. Sounds like you are doing well. This could be a good drill for you to try: https://www.youtube.com/watch?v=vJKMQ3w7NV4 Have fun
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Shashwat D.C. said...
Hi Libor, My 10-year kid is quite good at other strokes like Back & Breast, and can Fly decently well. But there seems to be one issue, after just a couple of laps, his Fly rhythm goes out of toss. The synchronization between the arms goes for a toss, and his right arm will land after the left one (with a slight bend on the elbow). And the more he tries, the worse it seems to get. The poor kid is quite distraught with this, and keeps asking for solution. Could this be because of muscular development, though his friends do not seem to be suffering from this pecularity. Can you share your thoughts on how we could resolve this, are there drills, strength training, etc. that could be of help. It would really do a world of good for the kiddo. Thanks.
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Alexandra Fox said...
Hi, I’m a breaststroker, and my butterfly is nonexistent. I’m 14 now, and I started swimming when I was 8. I’m still terrible. I look like I’m swimming butter-die instead of butterfly. I always swim breaststroke on certain strokes when its supposed to be fly. Do you have any fellow tips to make my fly better?
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Libor said...
Hi Alexandra, thanks for sharing your experience with butterfly. The best suggestion I can give you is to break the stroke down. So, instead of swimming full butterfly, swim one-arm butterfly where you can better focus on the timing and rhythm. There is no shame in doing that:). I actually have my swimmers swim one arm butterfly more than a full stroke, so they can finetune it better. Hope this helps.
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