Breath Hold Training for Freediving

Most people think holding your breath is about willpower. It's not. It's about relaxation.

The difference between a 45-second breath hold and a 3-minute breath hold isn't lung size or fitness — it's how relaxed you are. A calm body uses less oxygen. A calm mind interprets the urge to breathe differently. Everything in breath hold training comes back to this.

Why You Feel the Urge to Breathe

Understanding what happens in your body during a breath hold is the first step to extending it.

When you hold your breath, your body continues consuming oxygen and producing carbon dioxide (CO2). The urge to breathe is not triggered by low oxygen — it's triggered by rising CO2 levels. Your brain detects the CO2 buildup and sends increasingly urgent signals to breathe, starting as a mild discomfort in the diaphragm and building to strong contractions.

Here's the key insight: when you first feel the urge to breathe, you still have plenty of oxygen. The discomfort is your body's early warning system, not an emergency. Learning to recognise and be comfortable with this feeling — rather than panicking — is the core of breath hold training.

The Foundation: Relaxation

Relaxation is the single most important factor in breath holding. A relaxed body consumes dramatically less oxygen than a tense one. A relaxed mind doesn't amplify the discomfort of rising CO2. Everything else — breathing techniques, tables, physical training — builds on this foundation.

The Breathe-Up

The breathe-up is the relaxation phase before a breath hold. In freediving, this is the 2-3 minutes of calm breathing you do at the surface before taking your final breath and descending. The goal is to lower your heart rate, release muscle tension, and enter a state of deep calm.

• Breathe slowly and naturally — don't force big breaths
• Exhale slightly longer than you inhale (e.g. 4-second inhale, 6-second exhale)
• Consciously relax your face, jaw, shoulders, and hands
• Let go of thoughts. Focus on the sensation of breathing

Breathing Techniques

Diaphragmatic (Belly) Breathing

Most people breathe with their chest. Diaphragmatic breathing uses the diaphragm — the dome-shaped muscle below your lungs — to draw air deep into the lower lungs where gas exchange is most efficient.

How to practice:

• Lie on your back with one hand on your chest and one on your belly
• Breathe in through your nose. Your belly should rise while your chest stays mostly still
• Exhale slowly through your mouth. Your belly falls
• Practice for 5-10 minutes daily. This is a skill — it takes time to retrain your breathing pattern

Diaphragmatic breathing lowers your heart rate, reduces stress, and maximises the amount of fresh air reaching your lungs. It becomes the default breathing pattern for your breathe-up before every dive.

Box Breathing (Square Breathing)

A pre-dive relaxation technique used by freedivers, military personnel, and athletes. It calms the nervous system and lowers heart rate.

• Inhale for 4 seconds
• Hold for 4 seconds
• Exhale for 4 seconds
• Hold for 4 seconds
• Repeat for 2-5 minutes

Keep everything smooth and relaxed — no forced breathing. Adjust the timing to what feels comfortable (some people prefer 5-5-5-5 or 4-6-4-6).

Extended Exhale Breathing

Breathing with a longer exhale than inhale activates the parasympathetic nervous system (the “rest and digest” response), lowering heart rate and promoting deep relaxation.

• Inhale for 4 seconds
• Exhale for 7-8 seconds
• Repeat for 3-5 minutes before a breath hold or dive

Training Your CO2 Tolerance

CO2 tolerance training gets you comfortable with the discomfort of rising carbon dioxide. The urge to breathe doesn't go away — you just learn to manage it better. This is where significant improvements in breath hold time come from.

CO2 Tables (Dry Training)

CO2 tables use a fixed breath hold time with decreasing rest periods. Each round starts with higher residual CO2, training your body and mind to tolerate the discomfort.

Example CO2 table (for someone with a comfortable 2-minute hold):

The hold time should be around 60-70% of your comfortable maximum. The decreasing rest periods are what create the training effect — each hold starts with more CO2 in your system.

This is safe to do on dry land (lying on your couch). Do not do this exercise in water without a trained buddy.

O2 Tables

The opposite of CO2 tables: rest periods stay the same, but hold times increase each round. These train your body to function with progressively less oxygen. O2 tables are more advanced and more uncomfortable than CO2 tables — start with CO2 tables first.

Warm-Up Holds

Before a max-effort breath hold or dive, doing 2-3 short warm-up holds (30-50% of your max) pushes back the urge to breathe on your main attempt. This is standard practice before any serious breath hold.

Static Apnea Practice

Static apnea — lying face-down in the water holding your breath without moving — is the purest form of breath hold training. It strips away all variables (depth, movement, cold, equalisation) and lets you focus entirely on relaxation and CO2 management.

• Where: A pool, face-down, with a buddy standing over you
• Protocol: 2-3 minute breathe-up, final breath, hold. Your buddy watches you and taps your shoulder at agreed intervals. You respond with a finger signal to confirm you're conscious
• Start small: Don't go for a max hold on your first session. Practice the relaxation, the breathe-up, and getting comfortable in the position

Mental Training

Your mind is the biggest limiter during a breath hold. Physical capacity is rarely the problem — mental panic and inability to manage discomfort are what end most holds.

• Body scanning: During a hold, mentally move through each muscle group from toes to head, consciously releasing tension. This gives your mind a task instead of focusing on the urge to breathe
• Counting: Slowly count during your hold. This prevents time distortion (breath holds feel much longer than they are) and gives your mind an anchor
• Visualisation: Before a dive, mentally rehearse the entire sequence — breathe-up, descent, bottom time, ascent. Athletes who visualise perform measurably better
• Acceptance: The urge to breathe will come. Don't fight it. Acknowledge it, accept it, and relax into it. Fighting the contractions wastes energy and oxygen

Physical Training

Freediving is not a high-intensity sport, but a base level of cardiovascular fitness and flexibility helps.

• Swimming: Builds aerobic fitness and water comfort. Even 20-30 minutes of easy laps 2-3 times per week makes a difference
• Yoga: Improves flexibility (especially for chest and intercostal stretching), breathing control, and mental calm. Many top freedivers practice yoga regularly
• Running or cycling: Builds aerobic base, improves your body's efficiency at using oxygen
• Stretching: Intercostal and diaphragm stretches increase lung flexibility and vital capacity over time

Where to Train in Melbourne

For dry training (CO2 tables, breathing exercises, visualisation), you can practice at home. For in-water training, you need a pool and a buddy.

• Melbourne Sports and Aquatic Centre (MSAC), Albert Park — The most popular pool for freediving training in Melbourne. Local freediving clubs run regular sessions here
• Monash Aquatic Centre, Glen Waverley — Another option with suitable depth for static and dynamic training
• Aqualink Box Hill — Used by some training groups on the eastern side of Melbourne

Joining a freediving club gives you access to organised pool sessions with trained safety personnel. See our guide to freediving clubs in Melbourne and our pool training guide for details.

Beginner Training Plan

A simple weekly plan for someone starting out:

• Daily (5-10 min): Diaphragmatic breathing practice. Extended exhale breathing before bed
• 3x per week (15-20 min): CO2 table on the couch (dry training). Start with comfortable hold times and reduce rest by 15 seconds per week
• 1-2x per week: Pool session with a buddy — static apnea practice and dynamic (swimming underwater) practice
• 1x per week: Open water dive applying your training. Focus on relaxation during the breathe-up, not max depth

Common Mistakes

• Hyperventilating before a hold — Extremely dangerous. Lowers CO2 without adding oxygen, masking the urge to breathe and risking blackout
• Training alone in water — Blackout can happen without warning. Even in a bathtub. Never do breath holds in water alone
• Going for max holds every session — Max-effort holds are stressful and high-risk. Most training should be at 60-80% of your maximum
• Tensing up when contractions start — Fighting the urge to breathe burns oxygen and makes the contractions worse. Relax into them
• Comparing yourself to others — Breath hold ability varies enormously between individuals based on physiology, experience, and relaxation ability. Focus on your own progress
• Skipping the breathe-up — A proper 2-3 minute breathe-up makes more difference than any other single factor. Don't rush it

Frequently Asked Questions

How long can a beginner hold their breath?

Most untrained people can hold their breath for 30-60 seconds. After learning basic relaxation and breathing techniques, most people reach 1.5-2 minutes within a few sessions. With regular practice, 3-4 minutes is achievable within a few months.

How do you train to hold your breath longer?

Relaxation training (the single biggest factor), diaphragmatic breathing, CO2 tolerance tables, and regular static apnea practice in a pool with a buddy. Mental training and yoga also help significantly.

Is breath hold training dangerous?

Dry training (on land) is safe and a good place to start. In-water training carries a risk of shallow water blackout — loss of consciousness from low oxygen. Never train alone in water. Always have a trained buddy. A freediving course teaches the safety protocols that make training safe.

Where can I practice in Melbourne?

MSAC in Albert Park is the most popular pool, with freediving club sessions. Monash Aquatic Centre and Aqualink Box Hill are also used. Dry training can be done at home.