Freediving at depth looking up at another freediver

Performance Breathing: Boost Energy and Focus with Your Breath

If you’re training hard but still feel limited by breathlessness, early fatigue, or loss of focus under pressure, your breathing patterns could be the missing link. Performance breathing is about training how you breathe so your body can use oxygen more efficiently — helping you stay calm, strong, and focused when it matters most.

Through my own training and work with athletes, I’ve seen how powerful it is to shift from “just breathing” to breathing with intention. When you learn to control the speed, volume, and mechanics of your breath, you give your body the best possible conditions to perform — whether that’s in endurance sports, strength training, competition, or high-pressure situations that demand focus.

In this article, I’ll walk you through how performance breathing works, why it matters, and a few foundational techniques you can start using right away.

Elaina is performance breathing training while sitting on a meditation cushion looking out the window

How Breathing Affects Sports Performance

Your breath directly impacts your nervous system, heart rate, oxygen delivery, and mental clarity. When breathing is fast, shallow, or uncontrolled, the body shifts into a stress response — increasing fatigue and reducing efficiency.

By training your breathing patterns, you can support:

  • Better oxygen delivery to working muscles
  • Delayed onset of muscle fatigue
  • Improved endurance and strength
  • Reduced breathlessness
  • Sharper focus and concentration

This applies not only to sport, but to any situation that places stress on the body and mind — competition, public speaking, or demanding physical challenges.

The Foundations of Performance Breathing

1. Slow Your Breathing

Slowing down your breath activates the parasympathetic nervous system — the part of your nervous system responsible for calm, control, and recovery. A slower breath naturally lowers heart rate and helps maintain focus under pressure.

This is especially useful during training, rest periods, and moments of pre-competition nerves.

2. Breathe Through Your Nose

Nasal breathing automatically slows breathing rate and improves breathing efficiency. It also increases nitric oxide production, which helps with oxygen uptake and circulation, and filters the air before it enters the lungs. It is one of the most important aspects of functional breathing.

For performance, nasal breathing supports better control, rhythm, and endurance — particularly during lower to moderate intensity training.

3. Breathe Light

This is often the most surprising concept. Breathing less, rather than more, actually helps your body use oxygen more effectively.

By taking gentle sips of air in through the nose and softly exhaling through the nose, you:

This is a key skill for endurance and efficiency.

4. Breathe From the Diaphragm

Efficient breathing comes from the diaphragm working fully, with a 360-degree expansion through the ribcage — not shallow chest breathing.

Diaphragmatic breathing:

  • Minimizes dead air space in the lungs
  • Maximizes oxygen exchange
  • Keeps the diaphragm strong and functional
  • Reduces reliance on the neck and shoulder muscles

This creates a stable, powerful breathing foundation for movement and performance.

Elaina inside a frozen lake hole getting ready to dive underneath the ice. Practicing breathwork to face the challange.

Advanced Training: Breath Holds for Performance

Once the basics are in place, breath-hold training can be a powerful tool for sports performance.

Practicing breath holds — especially on the exhale — creates a state of controlled hypercapnia (increased carbon dioxide). This helps:

  • Improve CO₂ tolerance
  • Enhance oxygen delivery
  • Increase breathing efficiency
  • Build calm under physiological stress

As always, breath holds should be practiced gradually and with awareness.

Breathing Practices to Calm Nerves Before Competition

These techniques can help steady your breath, settle nerves, and sharpen focus before training or competition:

  • Alternate nostril breathing to balance the nervous system
  • Slow, light inhale with an even slower exhale, with the option to hold for a few seconds after the exhale
  • Long, controlled exhales to activate the parasympathetic nervous system

Even a few minutes can make a noticeable difference.

Train Your Breath Like Any Other Skill

Breathing is trainable. Just like strength, endurance, or mobility, small consistent practice leads to measurable improvements over time.

If you’d like support with performance breathing, CO₂ tolerance training, or sport-specific breathing strategies, I offer consultations and training sessions both in person and online.

Your breath is one of the most powerful performance tools you have — learning how to use it properly can change the way you train and compete.

About the Author

Elaina holding her breath underwater with an umbrella

Elaina is a freedive, breathwork, and Pilates instructor and the founder of Freedom in Life. She helps stressed people and athletes improve quality of life and performance through functional and performance breathing. Elaina works 1:1 online and in person, and also offers free resources through Freedom in Life.

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