Why Box Breathing Can Cause Dizziness and How to Avoid It
Short answer
Box breathing can make you dizzy because it alters your normal breathing pattern, which may cause your blood to have too little carbon dioxide. This leads to constricted blood vessels and reduced oxygen flow to the brain, creating lightheadedness. Adjusting breath hold times, breathing depth, and posture can help you avoid dizziness while still benefiting from box breathing’s calming effects.
What Is Box Breathing in Simple Terms?
Box breathing is a straightforward breathing technique where you breathe in, hold your breath, breathe out, and hold again, each phase lasting the same length of time. It’s called “box” because the four equal parts form a square shape in your mind. For example, you might breathe in for 4 seconds, hold for 4 seconds, breathe out for 4 seconds, then hold for 4 seconds before repeating. This pattern helps slow down your breathing and shifts your focus away from stressful thoughts to the rhythm of your breath. Many people use box breathing to reduce stress, improve concentration, or calm anxiety by bringing attention to a simple, steady pattern. It’s easy to learn and can be done anywhere without equipment.
Although box breathing is simple, it affects how oxygen and carbon dioxide move in your body. Oxygen is what your body needs to function, and carbon dioxide is a gas your body produces and needs to maintain balance. When you control your breath this way, you influence that balance, which impacts how your brain and body feel. This explains why some people experience dizziness or lightheadedness if the balance shifts too far.
How Does Box Breathing Work Inside Your Body?
Box breathing changes your breathing rhythm and the amount of oxygen and carbon dioxide in your blood. When you breathe deeply and hold your breath, you temporarily pause carbon dioxide release. Carbon dioxide helps keep blood vessels relaxed and open, especially in the brain. If carbon dioxide drops too low, blood vessels narrow, reducing blood flow to your brain and causing dizziness.
Imagine this scenario: if you breathe in deeply for 4 seconds, hold your breath for 4 seconds, breathe out for 4 seconds, and hold again for 4 seconds, you’re slowing your breathing rate below your usual pace. This slower pace reduces your heart rate and activates your body’s relaxation response, which is beneficial for stress relief. But if you hold your breath too long or breathe too deeply, your body blows off more carbon dioxide than usual, causing that gas imbalance.
For example, if your normal breathing rate is 12-16 breaths per minute, box breathing might slow it to 6-8 breaths per minute. This slower rate is calming but can also lower carbon dioxide in your blood, especially if breath holds are too long or if you over-breathe deeply. The result can be dizziness, tingling in your fingers, or even a faint feeling.
Why Does Box Breathing Cause Dizziness for Some People?
Dizziness during box breathing usually happens because of a condition called hypocapnia — when carbon dioxide levels in your blood fall too low. Carbon dioxide helps dilate blood vessels, allowing oxygen to reach your brain efficiently. When you hold your breath or take very deep breaths, you may reduce carbon dioxide too much, causing blood vessels to constrict and reducing blood flow to your brain.
This constriction means less oxygen reaches your brain, and your brain responds by making you feel dizzy or lightheaded. People new to box breathing or those who hold their breath longer than they can comfortably manage are more prone to this. Other things that can contribute include dehydration, low blood sugar, or standing up quickly during or after breathing practice.
For example, if you try to hold your breath for 10 seconds but your body is used to shorter holds, your brain may sense low carbon dioxide levels and trigger dizziness. Some people also unconsciously breathe faster or deeper before the hold, which can blow off excess carbon dioxide and worsen the effect.
Who Should Be Careful with Box Breathing and Why?
While box breathing is safe for many, some people should be cautious. Those with respiratory conditions like asthma, COPD, or chronic lung disease might find breath-holding difficult or risky. People with heart conditions or blood pressure issues should check with a healthcare provider before trying breath-holding exercises. Pregnant people and individuals prone to fainting or severe dizziness should also approach box breathing carefully.
People with anxiety disorders might find breath-holding uncomfortable, as it can sometimes trigger panic symptoms. It’s important to start slowly and stop if you feel any discomfort. Practicing while seated or lying down can prevent falls if dizziness occurs. If you feel faint or very dizzy, stop the exercise and breathe normally until you feel steady again.
For example, someone with asthma might find that holding their breath triggers coughing or shortness of breath, so they should shorten breath holds or avoid the technique altogether. Anyone with a history of fainting should do box breathing where they can sit or lie down safely.
What Are Common Terms People Mix Up with Box Breathing?
Many people confuse box breathing with other breathing techniques like diaphragmatic breathing, 4-7-8 breathing, or paced breathing. Understanding the differences can help you pick the right method.
- Diaphragmatic breathing: Focuses on deep belly breaths to engage the diaphragm but doesn’t require timed breath holds. It’s often used to promote relaxation and improve lung function.
- 4-7-8 breathing: A method where you inhale for 4 seconds, hold for 7 seconds, and exhale for 8 seconds. It aims to promote sleep and relaxation but uses different timing than box breathing.
- Paced breathing: Simply controlling the rate of breathing, like taking slow, even breaths without breath holds. It’s helpful for calming but doesn’t involve the hold steps of box breathing.
Box breathing uniquely uses equal timed phases for all four parts: inhale, hold, exhale, hold — creating a steady, repeating “box” rhythm that helps focus and calm the mind.
How Can You Avoid Dizziness While Doing Box Breathing?
If you want to try box breathing without feeling dizzy, follow these practical steps:
- Start with shorter breath holds. Instead of 4 seconds, try 2 or 3 seconds for each phase until you’re comfortable.
- Keep breaths gentle and relaxed. Don’t force a deep breath; breathe naturally but slowly.
- Practice while seated or lying down. This way, if you feel dizzy, you can avoid falling or injury.
- Stop and breathe normally if you feel lightheaded. It’s okay to pause and resume only when you feel ready.
- Stay hydrated and eat regularly. Dehydration or low blood sugar can make dizziness worse.
- Practice in a well-ventilated room. Fresh air supports comfortable breathing and reduces dizziness.
- Avoid breath-holding if you feel anxious or panicky. Instead, focus on simple slow breathing without holds.
For example, if you start with 3-second inhales and holds, you may feel comfortable after a few sessions and can increase the duration gradually. Always listen to your body signals.
What Should You Do Next If Box Breathing Makes You Dizzy?
If you experience dizziness regularly during box breathing, stop the practice and breathe normally until the feeling passes. Don’t push through dizziness, as it’s your body’s warning sign. If dizziness continues or is severe, consider consulting a healthcare provider to rule out underlying causes like heart or lung conditions.
You might want to try other calming techniques that don’t require breath holds, such as diaphragmatic breathing or mindfulness meditation. Learning to do box breathing correctly from a qualified instructor or using guided apps or videos can improve your technique and reduce dizziness.
If anxiety or panic symptoms arise during breathing exercises, reaching out to a mental health professional can help you find coping strategies tailored to your needs. For immediate help with distress, the 988 Suicide & Crisis Lifeline (call or text 988) is available.
For more details on safely practicing box breathing and its benefits for stress management, you can read articles on how to do box breathing correctly and when to use it best.
Frequently asked questions
Can box breathing cause hyperventilation?
Yes, if you breathe too quickly or deeply before breath holds, you can lower carbon dioxide too much (hyperventilate), leading to dizziness and tingling. To avoid this, breathe gently and avoid forcing deep breaths.
How long should a beginner practice box breathing?
Starting with 1-2 minute sessions and shorter breath holds (2-3 seconds) is best. Gradually increase duration as you get used to the rhythm, always stopping if you feel dizzy.
Is feeling dizzy during box breathing dangerous?
Usually, dizziness is temporary and not dangerous if you stop and breathe normally. However, frequent or severe dizziness should be checked by a healthcare professional.
Can children practice box breathing?
Yes, children can practice box breathing with shorter breath counts and under supervision to help them calm down and focus. Simplifying the counts helps them stay comfortable.
What other breathing techniques are recommended if box breathing causes dizziness?
Diaphragmatic breathing and paced breathing without breath holds are gentler options that reduce dizziness risk and still promote relaxation.