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Ancient practice meets modern science
The age-old art of breathwork is now supported by research showing that even a few minutes of focused breathing can reduce stress and improve long-term health. Once a cornerstone of traditions like Indian pranayama and Chinese qigong, breathwork is now being studied for its physiological and psychological benefits.
Who can benefit-and who should be cautious
While breathwork may help many, experts advise caution for pregnant women and individuals with respiratory conditions like asthma or chronic obstructive pulmonary disease. These groups were excluded from most clinical trials, though research suggests healthy individuals and those with chronic illnesses-such as inflammatory bowel disease-may experience reduced stress hormones and inflammation.
How breathwork affects the body
Scientists are uncovering how controlled breathing influences the autonomic nervous system, which regulates unconscious functions like heart rate and digestion. The system has three branches: the sympathetic (fight-or-flight), parasympathetic (rest-and-digest), and enteric (gut-related).
"Mouth breathing at a rapid, shallow pace activates the sympathetic nervous system, signaling stress," explains Abbie Little, a researcher at Griffith University. "Conversely, slow, deep nasal breathing engages the parasympathetic system, promoting relaxation."
Key techniques backed by research
Cyclic sighing
A 2023 study found that five minutes of cyclic sighing-two inhales through the nose followed by a prolonged exhale-improved mood and reduced anxiety over a month. Stanford professor David Spiegel notes that the extended exhale triggers a calming response, unlike deep inhales, which can increase heart strain.
Box breathing
Used by Navy SEALs, this technique involves inhaling, holding, exhaling, and holding again-each for four seconds. Studies suggest it helps manage chronic pain and stress, including in breast cancer patients post-mastectomy.
4-7-8 breathing
Inhale for four seconds, hold for seven, and exhale for eight. Research on bariatric surgery patients showed reduced anxiety compared to standard deep breathing. Experts recommend starting with shorter intervals and gradually increasing duration.
Coherent breathing
Slowing breaths to fewer than 10 cycles per minute synchronizes with heart and blood pressure rhythms, boosting heart rate variability-a marker of stress resilience. Guy Fincham of Brighton and Sussex Medical School calls this "a flexible nervous system."
Why consistency matters
Studies show benefits from just three to five minutes of daily practice. "Even small adjustments to breathing-like nasal, belly-focused breaths-can immediately improve nervous system regulation," says Little. The key is regularity, not perfection.
The science is still evolving
While breathwork's roots are ancient, modern research is nascent. Over half of all studies on the topic have been published in the last six years, and experts are still identifying the most effective methods. However, the growing evidence suggests breathwork could be a simple, accessible tool for managing stress and its related health risks.
"Breathwork is an ancient practice resurging as the new mindfulness hack."
Abbie Little, Griffith University
