Freediver unter Wasser

Freediving: How Deep Can You Go on a Single Breath?


AUTHOR:

Elias Kollböck

6 min Reading Time

Imagine descending into the water – no tank on your back, no regulator in your mouth. Just you, your lungs, and the sea. Ten meters, twenty meters, thirty meters. Around you, silence deepens. Your pulse slows. Your body shifts into a mode you’ll never experience on land. Freediving is the sport where less gear means more experience.

Quick Sprint

  • Freediving trains breath control, mental resilience, and bodily awareness – no other sport comes close.
  • The dive reflex automatically lowers your heart rate by up to 25%. Your body is built for diving.
  • Beginners routinely reach depths of 10-15 meters on a single breath after just a weekend course.
  • Safety first: Never dive alone. A buddy is mandatory. Certified courses start at €200.
  • The freediving community in Germany is growing rapidly. Indoor pools and lakes offer year-round training opportunities.

 

What Happens When You Descend: The Dive Reflex

The moment your face touches cold water, the dive reflex kicks in – a universal evolutionary remnant present in every human being. Your heart rate drops by up to 25 percent, blood vessels in your arms and legs constrict, and blood is redirected toward your core. Your body automatically optimizes oxygen consumption.

Starting at 10 meters depth, pressure begins to take effect. Your lungs compress; residual volume decreases. At 30 meters, they shrink to one-third of their surface volume. This doesn’t feel uncomfortable – it feels like a firm, enveloping embrace. And right here, freediving becomes meditative: you hear only your heartbeat – and nothing else.

214 m
World record for depth freediving on a single breath (Herbert Nitsch)
-25 %
Heart rate reduction triggered by the human dive reflex
4-6 min.
Average breath-hold duration for trained freedivers

 

Getting Started Safely: Your First Course

AIDA or SSI Level 1 Course: One weekend, €200-€350. You’ll learn breathing techniques, pressure equalization, safety signals, and complete your first dives to 10-15 meters. Most schools offer both pool sessions and open-water dives.

What you need: Swimsuit or wetsuit (depending on water temperature), mask, snorkel, and fins – all provided during the course. Personal equipment starts at €150 (mask + fins). No expensive gear required.

The most important rule: Never dive alone. Always dive with a buddy. Underwater blackout occurs without warning. It’s not a risk you can control – but it is one your buddy can spot instantly. Those who simultaneously train their aerobic endurance gain extra reserves – even underwater.

 

Freediving in Germany: Where to Train

Indoor: The diving tower scene is expanding. Monte Mare (Rheinbach, 10 m), Dive4Life (Siegburg, 20 m), and the Gasometer in Duisburg provide year-round, controlled conditions – ideal for technique training in winter.

Lakes: Lake Constance (Bodensee), Attersee (Austria), and Kulkwitzer See near Leipzig. In summer, water is pleasantly cool and visibility clear from 5 meters down. Most German freediving clubs train on lakes.

Ocean: For your next step. Egypt (Dahab is the world’s freediving capital), Croatia, Greece. Depths beyond 30 meters become accessible here. Those accustomed to cold-water training find the transition to open water significantly smoother.

 

Land-Based Training: Breathing Technique and Mental Strength

Static Apnea (Breath-Holding): Sit comfortably, breathe calmly for two minutes, then hold your breath. Beginners manage 1-2 minutes; after several weeks of training, 3-4 minutes become achievable. This practice works anywhere – even at your desk. But: never practice breath-holding in water without supervision.

CO₂ Tolerance Training: Repeated breath-holds with short recovery intervals (e.g., eight rounds of 1 minute hold, 30 seconds rest). This trains your body to tolerate rising CO₂ levels – the primary trigger for the urge to breathe.

Mental Training: Freediving is 70% mindset. Visualization, meditation, and body-scan exercises help manage panic underwater. Many freedivers build their foundation on yoga and breathing practices.

“Freediving is the only sport where you improve precisely by doing less: less movement, fewer thoughts, less oxygen consumption.”
Umberto Pelizzari, freediving legend and former world record holder

Pro tip: Practice pressure equalization (the Frenzel maneuver) dry, before entering the water. On land, you can master the technique calmly. Underwater – especially under stress – it’s ten times harder.

 

Cool-down

Click any question to reveal its answer.

Is freediving dangerous?
With proper training and a buddy: no. Most accidents occur during solo practice or due to overconfidence. A certified course plus strict adherence to the buddy rule makes freediving safer than many other water sports.
How deep can a beginner dive?
After a weekend course, you’ll reliably reach 10-15 meters. With several months of regular training, 20-30 meters becomes attainable. Most recreational freedivers operate between 15 and 40 meters.
Do I need a scuba certification?
Not legally – but it’s strongly recommended. AIDA or SSI courses teach life-saving safety techniques, including pressure equalization and blackout prevention. Without formal instruction, critical knowledge remains missing.
Can non-swimmers learn freediving?
No. Confident swimming is mandatory. You must feel completely at ease in water and be able to swim at least 200 meters continuously. Learn to swim first – then freedive.
How much does it cost to get started?
A beginner course costs €200-€350. Personal gear (mask, fins, snorkel) starts at €150. A wetsuit starts at €100. Total entry cost stays well under €500.

 

Header Image Source: Pexels / John Cahil Rom

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