Training Tip: Diaphragmatic Breathing Exercises to Increase Your Lung Capacity
Master the foundational breathing technique that every freediver needs — these diaphragm exercises can increase your vital capacity by up to 15% with consistent practice.
Why Diaphragmatic Breathing Matters for Freedivers
The diaphragm is the primary muscle of respiration, yet most people only use 60-70% of its potential. For freedivers, training this muscle directly translates to greater lung capacity, more efficient gas exchange, and longer breath-hold times. Studies show that dedicated diaphragm training can increase vital capacity by 10-15% over 8 weeks.
What You'll Need
- Yoga mat or comfortable floor surface
- A book (1-2kg) for resistance training
- Timer or phone
- Quiet, comfortable space
Exercise Routine (20 minutes)
1. Basic Belly Breathing (5 min)
Lie on your back, knees bent, one hand on chest and one on belly. Breathe in through your nose for 4 seconds — only your belly hand should rise. Exhale through pursed lips for 6 seconds. Your chest should remain still. Repeat 15 cycles.
2. Weighted Diaphragm Press (5 min)
Place a book on your belly. Inhale deeply, pushing the book upward with your diaphragm. Hold for 2 seconds at the top. Slowly exhale, letting the book descend. 3 sets of 10 breaths.
3. Segmental Breathing (5 min)
Inhale in 3 stages: first fill your belly (2 sec), then expand your ribs (2 sec), finally fill your upper chest (2 sec). Hold for 3 seconds. Exhale in reverse order for 6 seconds. Repeat 8 cycles.
4. Extended Exhale Practice (5 min)
Inhale for 4 seconds. Exhale as slowly as possible through pursed lips, aiming for 12-16 seconds. This trains CO2 tolerance — critical for freediving. Repeat 8 cycles.
Important Precautions
- Never practice breath-holds while lying down unsupervised
- Stop immediately if you feel dizzy or see spots
- Do NOT hyperventilate — keep breathing rhythmic and controlled
- Practice on an empty stomach or 2+ hours after eating
Difficulty Levels
Beginner: Follow the routine as described. Practice 3 times per week.
Intermediate: Increase book weight to 3-4kg. Extend exhale time to 20 seconds. Add 5 min of intercostal stretching.
Advanced: Use a 5kg weight. Add packing exercises (after proper instruction from a certified freediving coach). Practice daily.