Saving air while diving – 5 reasons why breath-saving techniques don’t work

Saving air while diving – Why conserving breath is not a good idea You hear it time and time again. On the boat. During the briefing. While putting on your jacket. “I need to reduce my air consumption this time.” Or in other words: Many people want to save air while diving.

And somewhere between good intentions and misguided ambition, an idea emerges that proves surprisingly persistent: if I breathe less – or simply hold my breath from time to time – I will save air.

Sounds logical. But it makes about as much sense as trying to save fuel with the handbrake on.

Today we’re talking about breath-hold diving – and why it has nothing to do with conserving air sensibly when diving. And why it’s not only pointless, but can also give you headaches, nausea and a pretty miserable dive.

Saving air when diving – what does breath-holding have to do with it?

In diving, breath-hold diving refers to consciously or semi-consciously holding your breath after inhaling. The aim is to take fewer breaths, consume less gas and extend your bottom time. In theory, this sounds like clever resource management. In practice, it is more like self-sabotage.

Because what people often forget is that your body is not a poorly programmed dive computer that you can trick with a little discipline. Breathing is largely controlled by the CO₂ content in your blood. When you hold your breath, your CO₂ levels rise. And that’s exactly when things start to get uncomfortable.

After such experiments, many divers report severe headaches, a vague feeling of dizziness or nausea after the dive. Sometimes this happens even while underwater. This has nothing to do with ‘too little oxygen’, but rather with too much carbon dioxide. Your body reacts to this with stress.

And stress underwater is about the last thing you need.

What happens in your body when you ‘save air’?

When the CO₂ level in your blood rises, your body releases stress hormones such as adrenaline and noradrenaline. Your blood vessels dilate, your pulse changes, the pressure in your brain can increase – and suddenly you have a headache.

At the same time, an internal alarm goes off. Your breathing centre signals: “Breathing would be a good idea right now.” If you continue to suppress this impulse, the discomfort increases. Some describe it as a feeling of tightness, others as mild panic. The problem is that this feeling intensifies more quickly underwater than on land.

And now comes the irony: trying to save air often leads to reflexive hyperventilation. As soon as you start breathing again, you breathe deeper or faster. Everything you “saved” before, you make up for twice as much. Your total consumption remains the same or even increases.

From the outside, it looks like this: Diver A starts off relaxed, repeatedly holds his breath, becomes increasingly restless and breathes significantly faster towards the end. Diver B breathes calmly, evenly and continuously from the start. Guess who comes out of the water more relaxed at the end – and often with similar or better air consumption.

Why good breathing has nothing to do with holding your breath

Efficient diving does not mean breathing less. It means breathing sensibly.

Calm, steady breathing with gentle inhalation and exhalation ensures that your CO₂ levels remain stable. Your body stays in the green zone, your head clear, your movements coordinated. This is exactly what reduces your air consumption in the long term – not holding your breath.

What’s more, if you focus too much on “saving air”, you often tense up without realising it. Your shoulders are raised, your jaw is clenched, your fin strokes are inefficient. Each of these small tensions costs energy. And energy costs air.

Experienced divers often appear almost boring underwater. Calm movements, clean buoyancy control, minimal use of fins. The secret is not a magical breathing trick, but routine, technique and relaxation.

And this is precisely where further training makes much more sense than holding your breath. In our SSI Specialty Perfect Buoyancy course, for example, you will learn how to find your perfect buoyancy, optimise your air consumption and move through the water with minimal effort. If you float cleanly, you need fewer corrective movements – and automatically reduce your air consumption. Sustainably. Without headaches. Without CO₂ experiments.

Those who dive regularly, know their equipment well and have confidence in their abilities will find that their breathing regulates itself. The body adapts. The breathing rate slows down naturally – without effort, without holding your breath, without heroics.

The myth of “good air consumption”

Subtle competition quickly arises, especially in groups. Who will return with 50 bar more? Who has the longest base time? Who is the “air king”?

To be honest, that makes about as much sense as comparing fuel consumption when driving a car without looking at who drove and how. Current, depth, temperature, flow work, stress level – all of these factors have a massive impact on your fuel consumption.

Higher air consumption is not automatically a sign of poor technique. Perhaps you are taller. Perhaps you are working on your buoyancy. Perhaps you are simply enjoying the dive instead of viewing it as an economy challenge.

Something else is important: breathe in a way that feels comfortable. If you notice that you are working against your breath, pause, slow down and check your position. Often, a better water position or a calmer fin stroke helps more than any “energy-saving trick”.

And if you regularly experience headaches or nausea after diving, it is worth taking an honest look at your breathing habits. Shallow breathing is a classic problem – and almost always the wrong solution.

How to really improve your air consumption

If you really want to save air when diving, there are more effective ways than holding your breath. If you want to reduce your air consumption when diving, you need technique – not breathing breaks.

Firstly, work on your buoyancy. If you float neutrally in the water, you will use significantly less energy. Secondly, optimise your fin strokes. Use small, controlled movements instead of frantic kicking. Thirdly, stay mentally relaxed. Stress is one of the biggest energy drainers there is.

And yes, practice makes all the difference. With every dive, your body becomes more accustomed to the underwater environment. Your movements become more efficient and your breathing calmer. Quite automatically.

If you want to experience this with us in Dahab: here in the Red Sea, you have ideal conditions to work on exactly that. Warm water, mostly good visibility, relaxed spots. Perfect for combining technique and serenity.

Our friends at divemagazine are also familiar with this topic and have compiled a whole collection of practical tips: https://divemagazine.com/scuba-diving-training/top-tips-for-improved-air-consumption – a worthwhile overview if you want to learn more about conserving air when diving.

If you are interested in topics related to diving in Dahab, feel free to browse through our articles at https://www.lagona-divers.com/en/blog/ – there you will find even more background information, anecdotes and practical tips from everyday diving life.

And if you’d rather optimise your breathing in the water than on screen, take a look at our options and plan your next dive with us: https://www.lagona-divers.com/en/rates-and-booking/. No competition for the lowest air consumption. Promise.

Especially since – let’s be honest – there’s no reason for us to save air anyway. Air is included. Nitrox too, by the way. You don’t have to “get the most out of it” or count your bars like crazy. Instead, focus on clean technique, relaxed dives and enjoying the Red Sea. You can breathe normally – your pressure gauge will cope.

From time to time, we also share stories, knowledge and little insights behind the scenes in our newsletter – without any marketing hype. If you’re interested, simply sign up and stay up to date in a relaxed way.

Ultimately, breathing is not an enemy to be defeated. It is your best friend underwater. So listen to it. Breathe calmly. Breathe regularly. And enjoy every dive – without having to conserve energy.