Can Breathing Exercises Help Blood Pressure? The Numbers, Plainly

Yes, but modestly. When researchers pooled the controlled trials, people who practiced slow breathing for at least a month had readings a few points below people who did not. That is a real signal, and it is also a small one.

This article walks through the headline numbers, what they mean for one person, how slow breathing might work, and where it fits next to the things your doctor already asks you to do.

Can breathing exercises help blood pressure?

The best single summary so far is a 2019 meta-analysis, a study that pools the results of many trials. It included 17 randomized controlled trials in people with high or borderline blood pressure, or on blood pressure medication. Every trial had people breathe at 10 breaths a minute or slower, for at least 5 minutes, at least 3 days a week, for at least 4 weeks. Compared with control groups, slow breathing was linked to systolic pressure (the top number) about 5.62 mmHg lower and diastolic pressure (the bottom number) about 2.97 mmHg lower (Chaddha et al., 2019).

The authors called the reduction modest. They also found high heterogeneity, which means the trials disagreed with each other quite a lot. Some found larger effects, some found almost none.

A 2022 review that focused only on people diagnosed with hypertension looked at device-guided breathing, using a gadget that sets the pace, against usual care. In that analysis the device-guided results were not statistically significant, and the authors suggested unguided slow breathing needs more study (Goncalves et al., 2022). So the evidence points in a helpful direction, but it is not settled.

What the numbers mean for you

An average of about 5 points systolic hides a wide spread. Some people may see more, some less, some nothing. Your reading also moves through the day with posture, caffeine, talking and stress, so a few points either way can be noise.

The American Heart Association reviewed non-drug approaches in 2013. It rated device-guided breathing as reasonable to consider (Class IIa) as an add-on, and rated aerobic exercise higher (Class I). The writing group suggested such approaches as additions to care, not replacements (Brook et al., 2013). The 2025 US guideline still builds care on measured blood pressure, lifestyle steps with stronger evidence, and medication when needed (Jones et al., 2025).

How slow breathing might work

Your body has pressure sensors in the large arteries of the neck and chest, called baroreceptors. Together with the brain they form the baroreflex, an automatic loop that nudges heart rate and blood vessel tone to keep pressure steady.

Breathing at about 6 breaths a minute seems to make that loop more responsive. In a lab study of 20 people with hypertension, a few minutes of breathing at 6 breaths a minute brought systolic pressure from about 150 to 141 mmHg and made the baroreflex more sensitive, while breathing at 15 breaths a minute did not improve the baroreflex (Joseph et al., 2005). That was a short session in a lab, so it explains a possible mechanism rather than proving a long-term effect. You can read more in what the baroreflex is.

How to try it

1. Sit upright with your back supported. Feet flat, shoulders loose, hands in your lap.
2. Breathe in through your nose for 5 seconds. Let the belly widen first, without forcing a big breath.
3. Breathe out for 5 seconds. Smooth and quiet, through the nose or softly parted lips.
4. Keep going for 10 minutes. That is 6 breaths a minute, close to what the trials used.
5. Practice once a day, at least 5 days a week. The trials lasted 4 weeks or more, so judge it over a month, not a day.

New to slow breathing? Start with 4 seconds in and 4 out for 5 minutes, and lengthen over a week or two. The full routine is in how to practice slow breathing for high blood pressure.

What the research shows

• 17 randomized trials, pooled: systolic about 5.62 mmHg and diastolic about 2.97 mmHg below controls, with high variation between studies (Chaddha et al., 2019).
• 22 studies in diagnosed hypertension: device-guided breathing did not significantly reduce readings versus usual care in the pooled analysis (Goncalves et al., 2022).
• 20 people with hypertension, one lab session: 6 breaths a minute reduced systolic from about 150 to 141 mmHg and improved baroreflex sensitivity (Joseph et al., 2005).
• American Heart Association statement: device-guided breathing rated reasonable to consider as an add-on; aerobic exercise rated higher (Brook et al., 2013).

The takeaway: slow breathing has a modest, uneven evidence base. It is a reasonable daily habit to add, and the habits with stronger evidence still come first.

Common mistakes

• Expecting a big drop. The average effect in trials is a few points. Treat anything more as a bonus.
• Judging it on one reading. Readings move minute to minute. Look at the trend over weeks.
• Breathing too deeply. Slow is the goal, not huge. Big breaths can make you lightheaded.
• Swapping it for proven steps. Exercise, less salt, and medication when prescribed have stronger evidence.
• Stopping after a few days. The trials ran for at least a month.

Who should be careful

• Anyone on blood pressure medication: stand up slowly after a session, and never stop or change medication without your clinician.
• People with heart, lung or kidney conditions: check with your provider before starting a new breathing routine.
• Anyone who is pregnant: talk to your provider first, since blood pressure in pregnancy needs close medical care.
• Anyone who feels dizzy, faint or unwell: stop and breathe normally. Seek care if it does not pass.
• Anyone tracking at home: use readings for trends, not single numbers, and share them with your clinician.