Key takeaways:
- Proper breathing can dramatically improve swim endurance, rhythm and relaxation.
- Mastering exhaling underwater and inhaling during rotation reduces fatigue.
- Practising bilateral breathing improves balance and adaptability in open water.
- Incorporating breathing drills sharpens technique and boosts confidence.
- Calm, controlled breathing on race day helps manage nerves and sustain performance.
Breathing: The hidden key to swimming efficiency
In the world of triathlon, breathing often takes a backseat to pacing, stroke mechanics, or transitions. Yet, the way you breathe in the water can make or break your swim. Efficient breathing is getting enough air while synchronising oxygen intake with movement to maintain rhythm and stay relaxed even when your heart is racing.
Many triathletes underestimate this fundamental skill, holding their breath underwater or gasping for air during every stroke. The result? A tense body with inefficient strokes and unnecessary fatigue. But once you master your breathing, swimming becomes a smooth, almost meditative cycle of inhale, exhale and glide.
Learning how to breathe when swimming is less about strength and more about being aware of your control and rhythm. Let’s break down how to do it right.
Breathing technique while swimming
Breathing in the water follows a simple principle: exhale underwater, inhale when your head turns to the side. It sounds straightforward, but executing it efficiently requires timing and practice.
When your face is submerged, you should be exhaling steadily through your nose or mouth, never holding your breath. The goal is to fully empty your lungs so that the moment your mouth reaches the surface, you’re ready for a quick, efficient inhale. Holding your breath underwater can lead to a buildup of carbon dioxide, causing panic or shortness of breath.
Bilateral vs. unilateral breathing
Many coaches encourage bilateral breathing by taking a breath every three strokes, alternating sides. This promotes balance in your stroke and prevents muscle imbalances. It also allows you to adapt easily to race conditions, like waves or competitors on one side.
That said, unilateral breathing, which is breathing to one side every two strokes, has its place too, especially when sprinting or in choppy open water. The key is flexibility: train both methods so you can switch depending on your needs.
Building a steady rhythm
Breathing rhythm should feel like a smooth dance of continuity and predictability. Exhale throughout the underwater phase, rotate and inhale quickly. Avoid breath-holding or gasping; instead, think of it as a circular flow of air. With time, your breathing will feel like part of your stroke, not a disruption to it.
How to breathe when you swim freestyle
Freestyle (or front crawl) dominates triathlon swimming for its speed and efficiency, but only if your breathing doesn’t break form.
Head position and rotation
Keep your head aligned with your spine, eyes looking slightly downward. When it’s time to breathe, rotate your head naturally with your body, not independently. Imagine your head resting on the water’s surface, turning just enough for one eye and one corner of your mouth to clear the water.
Over-rotating or lifting your head completely disrupts your streamline, drops your hips, and slows you down. Stay calm, rotate with your shoulders and breathe in the trough created by your arm recovery, which is that small pocket of air beside your face.
Timing your breath
Inhale during the natural roll of your stroke and don’t rush or pause your arm movement. A good rhythm is to breathe every two or three strokes, depending on comfort and intensity. The inhale should be quick and deep, while the exhale underwater should be steady and controlled.
Avoid these common mistakes
- Lifting your head too high causes drag and tension in the neck.
- Holding your breath increases CO₂ buildup and anxiety.
- Gasping for air leads to irregular breathing and fatigue.
- Inconsistent rhythm interrupts your flow and reduces efficiency.
Smooth, controlled breathing transforms your freestyle from chaotic splashing to effortless gliding.
Breathing during swimming drills
To truly master your breathing technique, incorporate focused drills into your routine. These drills help improve comfort, timing and lung control.
Catch-up drill
This classic drill teaches rhythm and timing. Extend one arm forward and wait until the other hand “catches up” before starting the next stroke. This deliberate pacing gives you extra time to focus on your breathing pattern.
Zipper drill
As your recovering arm moves forward, slide your thumb along the side of your body like a zipper. It encourages a smooth roll, perfect for practising head rotation and bilateral breathing.
Side-kick breathing drill
Kick on your side with one arm extended and the other by your side. Rotate your head gently to breathe, keeping your body streamlined. This builds comfort in open-water-style breathing, where stability is essential.
Perform these drills at the start or end of your swim sets for just 5–10 minutes to see the remarkable difference in breathing comfort and control.
Breathing tips for triathlon race day
When race day arrives, even the best swimmers can find their breathing patterns thrown off by nerves or the chaos of a mass start. Managing your breathing under these conditions is crucial.
Stay calm at the start
Before the horn sounds, take deep, slow breaths. This oxygenates your body and helps keep your heart rate down. Once you start swimming, ease into your rhythm rather than sprinting immediately.
Adjust to open water conditions
Open water brings new challenges. Expect some discomfort at first, especially if your breathing rhythm feels disrupted. Bilateral breathing becomes your ally here, allowing you to adapt to oncoming waves or sunlight glare.
Sight without breaking flow
Learning to sight (look forward to check your direction) without compromising your breathing rhythm takes practice. Incorporate mini-sighting: lift your eyes just enough to spot your target, then turn your head naturally to breathe on the next stroke.
Practice in race-like environments
The best preparation for race day is simulation. Train in open water whenever possible to feel the current during practice drafting and get used to breathing in unpredictable conditions. Familiarity breeds confidence.
Breathing right takes practice
Breathing might seem instinctive, but in swimming, it’s an art form. When you learn how to breathe when swimming, you unlock a smoother and faster stroke. Think of it as tuning your body’s internal rhythm with your breath guiding every move.
Just like your swim stroke or kick, breathing should be trained deliberately. The more you practise exhaling underwater, rotating smoothly, and keeping a steady rhythm, the more natural it becomes. So next time you hit the pool or open water, focus on the flow of air as much as the pull of your arms. It’s the quiet power behind every strong swim.
FAQs
How do I stop swallowing water when swimming?
Try exhaling steadily through your nose underwater. This creates pressure that prevents water from entering your mouth and nose during turns or waves.
Is it better to breathe every 2 or 3 strokes?
Both work. Breathing every 2 strokes (unilateral) provides more oxygen for sprints, while every 3 strokes (bilateral) helps balance and endurance. Alternate during training for versatility.
Should I breathe through my nose or mouth?
Exhale through your nose or mouth, whichever feels more natural. Many swimmers prefer the nose to prevent water intake. Inhale quickly through the mouth when your head rotates.
How can I improve lung capacity for swimming?
Incorporate hypoxic training, such as limited-breath sets or breath-control drills, to gradually build endurance. Always do this under supervision or within your comfort zone.
What should I do if I panic during open water breathing?
Roll onto your back, take deep breaths and regain calm before continuing. Practising in similar conditions before race day helps reduce anxiety.
Disclaimer: This article is for informational purposes only and should not replace professional training or medical advice. Always consult a coach or healthcare provider before starting a new training programme.
