Breaststroke is deceptively simple. It looks easy, right? Just pull, kick, breathe. But watch any beginner—or even many experienced swimmers—and you'll see a litany of subtle errors that turn a potentially fast, efficient stroke into a slow, awkward, and often painful struggle against the water.

I've coached swimmers for over a decade, and I've seen the same handful of breaststroke mistakes sabotage progress time and again. These aren't just minor hiccups; they're fundamental errors that break the stroke's mechanics, drain your energy, and can even lead to overuse injuries in your knees, shoulders, and lower back.

So, what are these common breaststroke mistakes? And more importantly, how do you fix them? Let's dive into the seven most frequent errors I see in the pool, and what you should be doing instead.

Mistake #1: Keeping Your Head Permanently Above Water

This is the cardinal sin of breaststroke. It's the number one mistake I see in 90% of casual swimmers. They look like they're doing the front crawl, but with a breaststroke kick. Keeping your head up forces your hips to drop, creating a huge amount of drag. You're essentially trying to push a brick through the water. Your body is not a speedboat; it's a submarine. It needs to be long, streamlined, and mostly underwater.

Think about it: when your head is up, your spine is angled upwards. Your legs and hips sink to compensate. The water resistance against your torso and legs quadruples. Every kick becomes a fight against gravity and drag instead of a propulsive force.

Instead, your head should be in a neutral position, looking down at the bottom of the pool, with your ears between your arms during the glide. When you breathe, lift your head just enough to clear the water, and then immediately tuck it back down as you bring your arms forward. Don't look forward; look down and slightly ahead. This keeps your hips high and your body line long.

Mistake #2: The Wide, Circular Arm Pull

Many swimmers think a bigger pull equals more power, so they sweep their arms in a wide, circular motion, almost like they're trying to scoop up all the water in the pool. This is a mistake. A wide pull does two things: it creates drag (because your arms are moving sideways, not forward) and it tires you out quickly.

The correct arm pull in breaststroke is not about pulling a lot of water; it's about positioning your body for the powerful kick. Your arms should stay in front of your shoulders, moving in a relatively narrow, heart-shaped pattern. You're not pulling yourself through the water with your arms; you're setting up your body for the explosive kick that does the real work.

The pull should be short, quick, and efficient. It's the appetizer before the main course (the kick).

Mistake #3: Timing is Everything (And You're Getting It Wrong)

Breaststroke timing is the rhythm that makes the stroke flow. The most common timing error I see is the "catch-up" stroke, where the arms and legs move simultaneously. In this mistake, swimmers pull and kick at the same time, then glide with arms and legs extended. This creates a stop-start motion that kills momentum.

The correct breaststroke timing is a sequence: pull, breathe, kick, glide. It's a continuous, flowing motion where one movement flows into the next. When your arms are pulling, your legs are relaxed and trailing behind. When your arms are recovering forward, your legs are kicking. The glide happens at the end, with everything extended.

Think of it like a whip. The energy starts with the pull, flows into the breath, accelerates into the kick, and then you have this moment of coasting in the glide before you start the sequence again. If you pull and kick at the same time, you're essentially fighting against yourself.

Mistake #4: The Stomp Kick

Ah, the infamous stomp kick. This is where swimmers, instead of executing a proper whip kick where the feet move in a circular, propulsive motion, simply bend their knees and then straighten them, driving their feet down towards the bottom of the pool. It looks like they're stomping on an imaginary pedal. This is a huge mistake.

A stomp kick is incredibly inefficient. You're pushing water downwards, not backwards. This creates lift at the front of your body (your head and shoulders pop up) but sinks your hips and legs, breaking your streamline. It also puts tremendous strain on your knees because you're essentially hyperextending them with each kick.

The correct breaststroke kick is a whip-like motion. Start with your legs straight and together. Bend your knees, bringing your heels up towards your buttocks (but not breaking the surface). Then, rotate your feet outward and sweep them apart and back in a circular motion, not a straight down one. The power comes from the inside of your feet and calves pushing against the water. Finish by snapping your legs together, straight and streamlined.

If your knees hurt after swimming breaststroke, you're almost certainly doing a stomp kick. Stop it. Immediately.

Mistake #5: Forgetting the Glide

This mistake is the opposite of the last one. Some swimmers are so focused on the pull and kick that they forget the most important part: the glide. The glide is where all your hard work pays off. It's the moment when your body, fully extended and streamlined, shoots forward through the water like a torpedo. Skipping the glide is like revving your car engine in neutral—you're wasting energy without going anywhere.

A proper glide is not just a pause; it's an active part of the stroke. After your kick snaps your legs together, you should hold that position for a beat. Your body should be fully extended, your head down between your arms, your hands together, and your legs together. This is when you're at your most hydrodynamic. You're coasting.

The length of the glide depends on your speed and goals. Sprinters have a very short glide. Distance swimmers have a longer one. But everyone should have one. Without it, you're just churning water.

Mistake #6: Poor Breathing Technique

Breathing in breaststroke is not just about getting air; it's integrated into the timing. The two most common breathing mistakes are breathing too early and breathing too late.

Breathing too early means you start to lift your head before your arms have even begun the pull. This, again, sinks your hips. Breathing too late means you're still trying to get air as your arms are already recovering forward. This throws off your entire rhythm and forces you to rush the kick.

The correct moment to breathe is at the end of the arm pull, when your hands are near your chest. Your head should lift naturally with the pull, not independently. As you breathe, your elbows should be high (think of showing them to the ceiling), and your chin should be just above the waterline. Don't look forward; look down at a 45-degree angle. The moment you have air, tuck your head back down. Don't wait.

Mistake #7: Overcomplicating the Stroke

This is a subtle one, but I see it in swimmers who have read too many technical articles. They try to micromanage every part of the stroke—the exact angle of the feet, the precise depth of the pull, the perfect degree of head lift. They become so focused on the individual parts that they forget the whole.

Breaststroke, at its core, is about rhythm and flow. It's a wave-like motion. Trying to make it perfectly mechanical often makes it stiff and slow. The best breaststrokers make it look effortless because they've internalized the timing and let their body move naturally.

Instead, focus on the big three: a streamlined body position (head down!), a correct pull-kick-glide sequence, and a powerful, propulsive whip kick. Get these right, and the rest will follow.