Breathing Exercises With Evidence Behind Them

What the 2020 Cochrane review found

Breathing exercises for asthma include the Papworth method, the Buteyko technique, yoga breathing (pranayama) and diaphragmatic breathing. A 2020 Cochrane review pooled 22 randomized trials with 2,880 adults with mild-to-moderate asthma^[1]. Compared with no active control, breathing exercises probably improved asthma-related quality of life and may improve symptoms and anxiety or depression scores, with moderate- to low-certainty evidence. Effects on lung function measurements were inconsistent. The authors noted that the trials varied in methods and quality.

In plain terms: breathing exercises are a low-risk add-on with reasonable evidence for feeling better, not a replacement for medicines.

Three techniques you can start today

Diaphragmatic breathing

Sit or lie with one hand on your chest and one on your belly. Breathe in slowly through your nose so the belly hand rises while the chest hand stays still. Breathe out gently through pursed lips. Five minutes, twice a day.

Pursed-lip breathing

Breathe in through the nose for a count of two, then out through lips pursed as if blowing on soup for a count of four. Useful during exertion, such as stairs, and commonly taught in COPD rehabilitation.

Slow nasal breathing

Elements of Papworth and Buteyko methods emphasize slow, gentle nasal breathing and avoiding over-breathing. If you want to go further, look for a respiratory physiotherapist trained in one of these methods.

For COPD: pulmonary rehabilitation

For people with COPD, the strongest non-drug intervention is a structured pulmonary rehabilitation program combining exercise training, breathing techniques and education, typically offered through hospitals or clinics^[3]. Ask your clinician for a referral; programs are often covered by insurance.

The bigger levers

• Smoking. Quitting slows the long-term decline in lung function more than anything else available^[4].
• Air quality. Check the AQI and shift outdoor exercise to cleaner days or hours^[5]; reduce indoor smoke, fumes and dust^[6].
• Treatment plan. Using controller inhalers correctly and consistently prevents many asthma symptoms^[2].

Making the practice stick

The trials in the Cochrane review typically involved supervised sessions over several weeks plus home practice, which is a reminder that technique and repetition matter^[1]. A few practical points help:

• Short and regular beats long and rare. Five minutes twice a day is easier to sustain than a weekly half hour.
• Practice when you are well. Learn the techniques on calm days so they are available during a hard one; they are not a substitute for a rescue inhaler.
• Stop if you feel dizzy. Slow breathing should feel calm, not effortful. Light-headedness means you are overdoing it.
• Get coached if you can. A respiratory physiotherapist can check your technique in one or two sessions, and many hospitals run group classes.
• Track it. Note practice days in the same weekly log as your symptoms, so you can see whether consistency changes anything.

These exercises cost nothing, carry very little risk and have evidence behind them, which is a high bar that most breathing supplements do not meet.

Where a spray fits

A soothing botanical spray and a breathing-exercise routine are not competitors. If you use Breathizen, pairing the morning spray with five minutes of diaphragmatic breathing gives you a ritual with at least one evidence-based component, and gives your symptom log a fairer chance of showing improvement for reasons you can trust.