What If Your Breathing Is Quietly Limiting Your Daily Performance?
If your breath is so imperative for survival, and fundamental for high performance, why wouldn’t it naturally work at its best all the time?
The answer lies in our modern lifestyles.
The Hidden Mouth Breathing Effects That Undermine Your Breathing Mechanics
Modern lifestyles tax natural and efficient breathing mechanics. The average office worker spends between nine to eleven hours sat at a desk. This encourages a slumped posture that compromises the muscles designed for breathing, leading to shallow, rapid and uneven breathing patterns. This can start to creep in during long stretches of screen-based work or back-to-back virtual meetings.
Furthermore, it’s estimated that 30 to 50 percent of people habitually mouth-breathe, and the percentage is even higher during sleep.
Why Nasal Breathing Improves Energy and Focus
In busy office settings, where air is often stale or recirculated, your nose is doing far more work than you realise. It is a specialised organ designed to filter, humidify and purify the air you breathe, while intelligently regulating the balance of oxygen and CO2 in your bloodstream.
The Role of CO2 in Oxygen Release and Daily Performance
We often think it’s lack of oxygen that triggers the urge to breathe. But really it’s CO2 – the ‘waste’ gas.
CO2 is a byproduct of metabolism, the biological process of energy production. When you get out of breath during exercise and feel the need to breathe deeper and faster, it’s due to the increase in CO2 from increased metabolism rather than a lack of oxygen. A similar rise happens during periods of intense cognitive demand, such as presenting, problem solving or managing high-pressure conversations.
This is where we need to briefly dip into biochemistry.
CO2 is mildly acidic. As levels of CO2 in the blood increase, so does acidity.
Oxygen molecules are transported via red blood cells. Red blood cells contain haemoglobin, which oxygen molecules bind to. Haemoglobin lets go of oxygen more easily when blood acidity is higher.
Higher levels of CO2 increase blood acidity, making it easier for oxygen to enter your cells, tissues and organs.
More oxygen being released from haemoglobin means increased energy and higher performance – physically, mentally and emotionally.
So while we often think that breathing is about getting oxygen into our body, the reality is that optimal breathing regulates the ideal amount of oxygen and CO2 in your blood.
If CO2 levels drop, oxygen release falls too, and your available energy for focus and decision making goes with it.
How Overbreathing Drains Your Energy At Work
Modern lifestyles, particularly the demands of high-pressure, desk based roles, encourages shallow, fast mouth-breathing. Even routine work stress, like managing inboxes or constant interruptions, can shift breathing into this pattern. Mouth-breathing poorly controls how much CO2 is expelled during exhalation resulting in excess CO2 removal and less oxygen released for energy production.
This pattern in other mammals usually only appears during moments of stress, excess heat, fear, intense effort, or illness. We’re increasingly breathing in a way that’s designed to manage stressful conditions, even when we’re at rest. This is referred to as dysfunctional breathing or more colloquially, overbreathing.
Essentially, we’re redlining our physiology when we should be cruising.
This doesn’t happen overnight. It’s a gradual process. Over time, your body adapts to chronically low levels of carbon dioxide. You may feel this as a slow onset of fatigue, low concentration, irritability, or poor physical performance. This affects productivity, mood, focus, and sleep quality. In a corporate environment this can quietly erode performance, decision making and resilience across the workweek.
Without repairing the underlying mechanics, your body has to lean in to the problem by increasing breathing rates even further. We end up stuck in a cycle of overbreathing. CO2 levels stay too low and oxygen release and energy is impaired.
The simplest, often overlooked solution is retraining to breathe through your nose while taking light, slow, deep breaths.
As you breathe more with your nose, you’re retaining optimal levels of CO2, which means your tissues can uptake more oxygen and use it to produce more energy.
Who’d have thought something so simple could have such far-reaching effects on your performance and wellbeing?
Practical Ways to Improve Your Breathing During the Workday
You can start improving your breathing with small changes built into your day.
1 – Notice your breathing when you are seated
Most people default to dysfunctional breathing when working at a desk. Throughout the day, especially when shifting between tasks or workstations, pause for a few seconds and check in.
- Are you breathing through your nose or your mouth?
- Is your breath light and steady or fast and shallow?
- Are you upright or slumped?
If necessary, reset your breathing and posture and don’t judge yourself if you need to keep doing this. It’s natural when you start and you will improve with time.
2 – Stay with nasal breathing during low-level movement
We tend to switch to mouth breathing the moment we engage in even light activity. Use walking to practice nose breathing under mild physical demand. It also helps you to stay present and avoids unnecessary rumination.
3 – Train your breath with a simple breathing pattern
A structured breathing pattern can help stabilise your system during and after high-pressure periods. Box breathing is a powerful tool to regulate your breathing rate, balance your nervous system, and practice light breath holds.
If you want a deeper explanation and a short audioguide, my full article on box breathing covers exactly how and why it works to boost performance.
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