Most adult swim beginners make the same handful of mistakes. The reasons are predictable — adult beginners are trying to swim with conscious control of what should be automatic, and they’re working from intuitions about water that mostly come from being terrified of it. The corrections are mechanical, not athletic. Once you see what you’re doing wrong, fixing it takes weeks, not years.
This article catalogs the most common mistakes I’ve seen in adult learn-to-swim contexts, the symptoms each one produces, and the drill or focus that fixes each one. Read through it; identify the ones that match your stroke; spend a couple of sessions on the fixes.
Mistake 1: Head position too high
Symptom: Your hips drag low in the water. You feel like you’re constantly fighting to stay afloat. Swimming feels exhausting after 25 yards.
Why it happens: Adult beginners want to see where they’re going. They keep their eyes forward, looking at the wall they’re approaching. The reflex makes sense — but lifting the head sinks the hips, which makes everything else harder.
The fix: Eyes look straight down at the bottom of the pool. The top of your head points where you’re going, not your face. Your face is angled down 30–45 degrees.
The drill: Push off the wall in streamline (arms extended, hands stacked, face in the water looking down). Glide as far as you can without doing anything. Notice that when your eyes look down and your head is in line with your spine, your hips naturally rise.
The mental shift: in swimming, your eyes don’t drive you. Your body line does. Look down, trust the water to take you where you need to go.
Mistake 2: Holding your breath
Symptom: You feel breathless within a few strokes. You stop at the wall gasping. The pool feels like it doesn’t have enough air.
Why it happens: Underwater, the reflex is to hold your breath. Above water, you can’t get a full breath in the half-second your face is at the surface. So you arrive at the wall having held your breath and tried to gulp at the same time. CO₂ builds up; panic follows.
The fix: Exhale continuously underwater. The exhale happens during the underwater phase of every stroke, not at the moment you turn for breath. By the time your face turns out of the water, your lungs are mostly empty and ready to inhale fast.
The drill: Hold the wall, face in the water, exhale slowly and steadily through your nose. Time it. Beginners often get to 5–10 seconds; aim for 15–20 with steady controlled exhale (not a burst of bubbles and then nothing).
Once that feels easy, swim slowly while focusing only on continuous exhale. Stop trying to swim well. Just exhale through every underwater phase. The breathing rhythm will emerge naturally.
For more on this, see how to breathe while swimming.
Mistake 3: Lifting the head to breathe
Symptom: Hips sink dramatically when you breathe. You feel like you go “down” before you go “forward.” Stroke timing is jerky.
Why it happens: Adult beginners think “I need air” and lift their head straight up to get it. This works for putting your face above water, but it kills your body position.
The fix: Rotate your head to the side with your body roll, don’t lift it. One ear stays in the water during the breath. The body roll (your shoulders rotating around the long axis of your body) carries your face to the surface naturally — your head just turns slightly, then turns back.
The drill: Side kicking. Push off on your side, lower arm extended in front, upper arm at your side, face out of the water. Kick the length of the pool, breathing freely. This is what your body should feel like during the breath in actual freestyle — except it lasts much longer in the drill so you can feel the position clearly.
After 4–6 lengths of side kicking, return to swimming. The breath should feel more like “rotating to look at the side” and less like “lifting my head out of the water.”
Mistake 4: Kicking from the knees
Symptom: Your kick is big, splashy, and exhausting. Your knees bend significantly. Your forward progress is minimal despite hard kicking.
Why it happens: Walking and running involve hip flexion plus knee extension. Adult beginners default to that pattern in the water. The result is a kick that pushes water backward less than it pushes it sideways — and it tires out the quads quickly.
The fix: Kick from the hip. The whole leg moves as one unit, with only a slight bend at the knee. Toes pointed (not flexed up). Small amplitude — feet stay within 8–12 inches of each other.
The drill: Kickboard kicks with focus on small, fast, hip-driven motion. Hold the board at the front, face in the water (or out, for breathing). Kick the length of the pool. Notice how much less the knees bend when you focus on the hip. Notice how the feet stay close together. Notice how the kick feels smaller but the speed actually increases.
The key cue: “Stir the water with your feet, don’t churn it with your knees.”
Mistake 5: Straight-arm pull
Symptom: Your stroke feels weak. You don’t seem to be pushing much water. You can swim, but slowly.
Why it happens: Beginners pull straight back, treating the arm like a paddle. The hand goes from in front of the shoulder to next to the hip in a straight line, with the elbow extended throughout.
The fix: “High-elbow catch.” Right after your hand enters the water, your forearm rotates so it points down at the pool floor while your elbow stays high (close to the surface). From this position, you pull along your body line, with the hand passing just under your torso.
The drill: Catch-up freestyle. Extend your right arm forward. Take a complete stroke with the left arm — entry, catch, pull, recovery — until your left hand returns to meet your right hand in front. Then swap. The drill slows everything down and forces you to feel each phase of the arm cycle. The high-elbow catch becomes obvious when you can focus on a single arm at a time.
For freestyle technique more broadly, see how to swim freestyle.
Mistake 6: No body rotation
Symptom: Your stroke feels stiff. You feel like you’re swimming “flat” — body locked in one plane. You have a hard time getting full arm pulls.
Why it happens: Adult beginners often think of the body as a rigid raft moving through water. They don’t realize the body rotates around the long axis with each arm stroke.
The fix: Rotate your shoulders and hips together with each arm pull. As your left arm enters, your left side rotates down (about 30–45 degrees from horizontal). As your right arm pulls, your right side rotates down. The roll powers the catch and sets up the breath.
The drill: “6-3-6” drill (sometimes called “6 kick switch”). Push off on your right side, lower (right) arm extended forward, upper (left) arm at your side. Kick 6 times. Take 3 strokes. Now you’re on your left side. Kick 6 more times. Repeat. The drill exaggerates the rotation and teaches the body what full body roll feels like during stroke.
Mistake 7: Trying to swim too far too soon
Symptom: You insist on swimming a full 25-yard length each time, even when your form is falling apart. You finish the length exhausted with bad technique.
Why it happens: Wanting to feel like a “real” swimmer leads adult beginners to push for distance before they’re ready. Form degrades fast under fatigue, and the bad form gets grooved as habit.
The fix: Swim shorter distances with better form. Start with 12-yard segments (half a 25-yard pool). Walk back to the start. Swim another 12. Do this until 12 yards feels easy with good form, then extend to 18 yards. Eventually 25.
The drill (not really a drill, more a discipline): Permission to do less. If you’re 8 yards into a length and your form has fallen apart, stop. Stand up. Walk back to the wall. Start over with better form. The yards you swim with bad form don’t make you a better swimmer.
Mistake 8: Pulling out wide
Symptom: Your arms pull water out to the sides, almost like you’re doing a horizontal jumping jack. You feel unstable in the water.
Why it happens: Beginners pull water in the direction they “feel” it — outward. The water is more directly under your body, but it doesn’t feel that way until you’ve trained the pattern.
The fix: Your hand should pull along the centerline of your body — almost passing under your torso. The S-shape some coaches teach is actually a subtle path that brings the hand close to the body.
The drill: Swim freestyle with your eyes watching your hand enter and pass through the water (face down, looking through your goggles). Notice if your hand is going out wide. Consciously pull it more directly along your body. Visual feedback fixes this fast.
Mistake 9: Breath every 2 strokes on the same side, with bad timing
Symptom: You breathe every other stroke (every cycle) on your dominant side. The pattern feels okay but you’re losing time and rhythm on the breaths.
Why it happens: Every-2 breathing on one side is intuitive for adult beginners but creates asymmetric stroke development (one side gets stronger) and limits visibility to one side (you can’t see boats or swimmers on the other side in open water).
The fix: Bilateral breathing — every 3 strokes, alternating sides. The pattern: right-left-right-breathe-left-right-left-breathe-right. You breathe to alternate sides every third arm stroke.
The drill: Start by practicing breathing on your non-dominant side. Use a kickboard with your face submerged, turn to breathe on the weak side every time. Once that feels possible, swim freestyle with bilateral breathing for short distances. It feels awkward at first; within a few weeks, it becomes natural.
You don’t have to swim bilateral all the time. Most experienced swimmers breathe every-2 for hard sets and every-3 for easy or recovery sets. But the ability to breathe to either side is worth developing.
Mistake 10: Trying to swim faster instead of better
Symptom: Your pace at the same effort isn’t improving over months. You’re working harder than ever and getting tired but not getting faster.
Why it happens: Adult beginners try to swim faster by working harder. In swimming, faster comes from being more efficient — moving more water per stroke, reducing drag, breathing better. Effort without technique improvement just produces more tired swimming, not faster swimming.
The fix: Work on form, not pace. Specifically:
- Take fewer strokes per length. Count them. If you usually take 22 strokes per 25 yards, try to do it in 20.
- Focus on each individual arm pull being a complete, powerful motion.
- Reduce drag (better body position, less head lift).
- Refine your kick (smaller, faster, less knee bend).
The improvements compound. Swimmers who focus on form in months 1–6 swim faster in months 7–12 than swimmers who focused on pace from the start.
Common timing pattern: which mistakes to fix first
If you’re an adult beginner trying to improve, work on the mistakes in roughly this order:
- Holding your breath. Fix this first. Continuous exhale changes everything.
- Head position. Eyes down. This single change makes the next ten things easier.
- Lifting head to breathe. Switch to rotation.
- Kicking from the knees. Switch to hip-driven kick.
- Body rotation. Add roll to the stroke.
- Pulling out wide. Bring the pull along the body line.
- Straight-arm pull. Add the high-elbow catch.
- Bilateral breathing. Once everything else is solid.
Don’t try to fix all of these in one session. One per session, one per week. The improvements compound.
When you can’t see your own mistakes
The hardest part of self-coaching is that you can’t see what you’re doing wrong. A coach watching for one session will identify things you’ve been doing for months without realizing.
If progress stalls and you can’t figure out why, take 2–4 private lessons (see swim lessons for adults) specifically for stroke analysis. The cost is modest; the time savings are months.
For broader context, see how to swim freestyle and how often should you swim.
