Breaststroke is widely considered the trickiest stroke for young swimmers to learn—and the kick is usually where things fall apart. Unlike freestyle or backstroke, the frog kick demands a very specific sequence of movements that feels unnatural at first: bend, turn, push, squeeze, glide. Miss any one of those steps and the kick stops working.
The good news is that most kids make the same handful of mistakes, and every single one has a clear fix. Whether you’re a swim coach, a parent watching from the bleachers, or a beginner swimmer trying to sort out what’s going wrong, this guide walks through the six most common breaststroke kick errors—and the drills and cues that actually correct them.
Quick Answer
The most common breaststroke kick mistakes kids make are: sneaking in freestyle ankle flicks between kicks, not bending their knees enough, keeping toes pointed straight back instead of turning them out, skipping the glide, spreading their knees too wide, and pulling their knees to their chest instead of their heels to their hips. Each mistake can be corrected with targeted drills and simple verbal cues—no complicated equipment needed.
The 6 Most Common Breaststroke Kick Mistakes (And How to Fix Each One)
Mistake 1 — Flutter kicks sneaking in. Kids who already swim freestyle often let little ankle flicks creep in between each breaststroke kick. It looks like a ghost freestyle flutter and it kills rhythm while adding drag. The fix is rhythmic counting: have your child say out loud “Kick… two… three… glide” so they consciously pause between kicks. A fun drill is the Noodle Glide Game—child holds a pool noodle under their arms, does one kick, then glides to a cone or toy. One powerful kick should carry them far; if it doesn’t, they’ll feel it immediately.
Mistake 2 — Straight-leg kicking. When kids swing rigid legs backward without bending at the knee, there’s no “snap” in the kick and almost no propulsion. Teach the sequence explicitly: “Bend → Turn → Kick → Squeeze.” At the wall drill called Frog Feet, the child holds the gutter, brings heels toward their seat, turns feet outward so toes point away from each other, then pushes water backward. Do it slowly on land first. Another useful drill: Pencil–Frog–Pencil, where the swimmer alternates between a tight streamline and the bent frog position so they feel the contrast.
Mistake 3 — Toes pointed straight back. If feet stay in a pointed position like a fin rather than flexing and turning outward, the swimmer is pushing with the top of their foot instead of the inside of their shins and soles. Coaching cue: “Duck feet” or “heels together, toes apart.” Deck Clamshells work well here—sit on the pool edge with feet dangling, practice turning just the feet out into a V shape without moving the knees. The Sock Trick (doing the motion on a smooth floor in socks) helps kids feel exactly when their toes are pointing the wrong direction.
Mistake 4 — Rushing and skipping the glide. Young swimmers often kick rapidly with no pause, burning energy and creating constant drag. Breaststroke efficiency lives in the Kick → Squeeze → Glide sequence; without the glide, there is no recovery and no speed. Cue: “Kick—Freeze—Glide” and “go long like a pencil.” One-Kick Rockets are great for this: push off the wall, do one single kick, then hold a streamline glide while counting to three. If the child cheats and kicks again early, they restart from the wall.
Mistake 5 — Knees spreading too wide. When knees splay out beyond hip width, the propulsive surface (the inside of the shin and foot) faces sideways instead of backward. There’s also a real injury risk here—wide breaststroke kick is a known contributor to medial knee stress. The SLOB drill (Streamline On Back) is a coach favorite: lie face-up in streamline, do the kick, and watch your knees—if they break the water surface, they’re too wide. Cue the swimmer to keep a “small window” between their knees, not a “big door.”
Mistake 6 — Pulling knees to the chest. During the recovery phase, many kids drag their knees up underneath their torso instead of drawing their heels back toward their hips. This creates a huge drag pocket under the body and slows them down significantly. The fix is to keep the thighs nearly still and let the lower leg do the work. Vertical kicking in deep water while holding the wall is excellent for isolating this: the child can feel whether their knees are swinging forward or their heels are bending back.
Why Getting the Kick Right Matters More Than Arm Pull
In breaststroke, the kick generates the majority of the forward propulsion—more than the arm pull in most young swimmers’ technique. That means a broken kick doesn’t just look wrong; it physically holds a child back in the water and forces them to work twice as hard to cover the same distance. Coaches often say that breaststroke is “all legs” for a reason.
It also takes longer to ingrain than other strokes. Unlike freestyle where the kick is mostly a balance tool, the breaststroke frog kick requires both precise timing and unusual joint mobility (turning the feet outward requires hip and ankle flexibility many kids haven’t developed yet). This is why most experienced swim instructors teach the kick on land before ever putting a child in the pool, and why patience is essential. Rushing progression—skipping the “toes out” step because it’s awkward—is one of the most common teaching mistakes that leads to all six kick errors above becoming habits.
Drills That Actually Work — A Quick Reference
For coaches and parents running practice, here’s a fast-access list of the most effective breaststroke kick drills for kids. Frog Feet at the Wall isolates the bend-turn-kick-squeeze sequence in a controlled position. One-Kick Rockets train the glide and reward a powerful single kick with real distance. Deck Clamshells fix the toes-straight-back error with zero water required. SLOB (Streamline on Back) exposes knee width issues immediately and visually. The Noodle Glide Game adds a game element that keeps younger swimmers engaged while teaching rhythm. Coach’s Whistle drill—kick on the blow, glide until the next blow—builds timing and patience in just a few laps.
Keep sessions short and focused on one mistake at a time. Trying to correct all six errors in one practice leads to overwhelmed kids and no lasting change. Pick the most glaring mistake, do the targeted drill, and move on. Most kids need several sessions before a new motor pattern feels natural—celebrate small wins along the way.
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Breaststroke kick mistakes kids FAQs
What age can kids start learning the breaststroke kick?
Most swim instructors introduce the breaststroke kick once a child is comfortable floating and has basic water confidence—often around age 5 to 7—but formal technique work is usually most effective around ages 6 to 8 when kids can follow multi-step instructions. The kick can be introduced even earlier in a simplified “frog kick” form during recreational lessons.
Why does my child’s breaststroke kick look like a bicycle pedal?
A bicycle-style kick usually means the child is alternating legs instead of moving them symmetrically. Breaststroke requires both legs to move together at the same time in a mirror-image pattern. Go back to the wall drill—hold the gutter and practice both heels drawing up and both feet turning out simultaneously before returning to swimming.
Can a bad breaststroke kick cause knee pain in kids?
Yes—a kick that’s too wide or that puts excessive rotational stress on the knee joint can contribute to medial knee discomfort, sometimes called “breaststroker’s knee.” If a child complains of inner knee pain during or after practice, have a coach check their kick width and foot turnout angle. Correcting technique early is the best prevention.
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