Source: Elijah Hiett / Unsplash
Cowritten by Nathalie Boutros and Tchiki Davis.
When you’re approaching a deadline at work, struggling to get your children out the door in the morning, dreading a difficult but important exam, or facing down any of the other innumerable challenges that make up modern life, you may find that your breathing is affected. You may notice that your breaths are shallow and unsatisfying, failing to fill your lungs or expand your chest. Or, you may notice that you’re not breathing at all, holding your breath for extended periods.
These effects of stress on breathing are normal, and many people experience them. However, just because they’re normal doesn’t mean they’re ideal, and over time, they can have a negative impact on your well-being.
Techniques exist for getting your breath under control, even in stressful situations. One such controlled breathing technique is box breathing, which was developed and popularized by a former Navy SEAL—someone with extensive first-hand experience of living through daily stress.
The box breathing technique is simple, accessible, and effective in helping you function better during stressful times, which, for so many of us, is most of the time. Let’s define what box breathing is, outline techniques and best practices for it, and review some of the many benefits.
What Is Box Breathing?
Box breathing is an intentional breathing technique characterized by the slow, rhythmic, even inhalation and exhalation of air (Ahmed et al., 2021). It is sometimes called square breathing or four-square breathing. The names “square,” “box,” and “four-square” all reflect the fact that this breathing technique consists of four steps, each of which should take the same amount of time, usually four seconds. The four sides of the square, the four steps in the sequence of box breathing, are as follows:
- a measured and even inhalation
- a period of holding the breath in your lungs
- a measured and even exhalation
- a period of holding your breath before the next inhalation
This sequence of four steps is then repeated for anywhere from one minute up to 20 minutes, and perhaps even longer.
Mark Divine, the former Navy SEAL who popularized this breathing technique, recommends daily box breathing of between ten and 20 minutes.
Once you are familiar with the practice of box breathing, you can then use the technique at any point throughout the day for as little as one to two minutes. You may find box breathing helpful as a way to relieve stress, calm down, and maintain an alert, focused mind (Divine, 2016).
According to Divine, box breathing may be effective in putting you in a “neutral energetic” state. You may find yourself feeling neither charged up nor relaxed but feeling alert, grounded, and ready to take action.
Box Breathing Technique
The box breathing technique is simple. It consists of four steps. Reflecting the fact that a square is made up of four sides of equal length, each step in the box breathing technique takes the same amount of time. Although you may need to decrease the length of each step, or you may want to increase the length of each step, it is generally recommended that you start by taking four seconds for each step. The four steps are:
- Inhale for four seconds
- Hold your breath for four seconds
- Exhale for four seconds
- Hold your breath out for four seconds
Then repeat the process for as long as you like. However, many practitioners and instructors recommend at least one minute to secure the anxiety-reducing, calming, and energizing benefits of box breathing (Divine, 2016).
Benefits of Box Breathing
Box breathing is just one form of deep, intentional, or contemplative breathing. Breathing is a physiological activity, like digestion. However, unlike digestion, breathing is a physiological act that people can exert some level of conscious control over.
Box breathing, as an intentional breathing technique, encourages you to concentrate on your breath and to intentionally control your breath. Doing this may help you to breathe more deeply than you might when breathing unconsciously.
There are many physiological benefits to deep breathing (Gerritsen & Band, 2018). Deep breathing may increase levels of oxygen in the brain, increasing mental clarity, focus, concentration, and cognitive performance. Deep breathing also stimulates the parasympathetic nervous system. This is the body’s system of hormonal and chemical communication that is responsible for recovery from stress.
Among its beneficial effects, deep breathing can reduce your heart rate, regulate your digestion, and may even increase your eye health. All of these specific physiological effects may, in turn, allow you to feel less anxious, calmer, and more grounded.
This post also appears at The Berkeley Well-Being Institute.
Nathalie Boutros has a Ph.D. in psychology from the University of Auckland and completed postdoctoral training in the psychiatry department at the University of California, San Diego.