Do breathing exercises help stress—and is more intense better?

Brief breathing practices can support a pause and improve momentary mood, but stronger sensations are not proof of better stress relief. What US and UK randomized trials found.

Prepared by PoshanSense · AI-assisted educational writing
Our sources and editorial approach · Not clinically reviewed

Complementary human studies · Published 2023, 2024

The day feels crowded, your shoulders are tense, and a video promises a reset in a few breaths. Another recommends faster breathing and longer holds. Does a stronger sensation mean a better result—or can a simple pause be enough?

There is a useful idea here, with a smaller claim

Setting aside a little time for a structured practice can change how you feel immediately afterwards. That is worth studying. It is also different from showing that a technique treats anxiety, reliably improves sleep or solves the source of ongoing stress.

Keep those questions separate before choosing a practice based on a dramatic demonstration. A change in mood after a session, a questionnaire score after several weeks and a clinical diagnosis are different outcomes. One should not quietly substitute for another.

What did the brief-practice study show?

In the 2023 US trial, both mindfulness and breathing groups generally felt better after daily sessions. Pooled breathing showed a greater increase in positive affect, with the clearest individual comparison involving cyclic sighing, an exhalation-focused practice.

Breathing did not clearly outperform mindfulness for reductions in negative affect or state anxiety. Nor did the study find clear improvements in sleep, resting heart rate or heart-rate variability. A lower respiratory rate in some comparisons is not proof of a complete nervous-system reset.

More intense was not clearly better

A 2024 UK trial compared intensive fast breathing with holds against a credible, paced-breathing comparison. It randomized 200 healthy adults aged 18–39; 182 provided the main post-intervention stress outcome. Both groups practised about 20 minutes daily for three weeks.

The intensive programme did not show a statistically clear advantage on the main stress outcome, or the secondary mental-health and sleep outcomes. This was not the same brief exhalation-focused protocol as the US study, so it should not be treated as a direct replication or refutation of that result.

Why the control group changes the answer

A breathing session offers more than a breathing rate. There is time away from other demands, focused attention, instruction and an expectation that it may help. Comparing against another believable practice asks whether a particular technique adds something beyond that shared experience.

In the UK trial, the active comparison was viewed as similarly credible. The lack of a clear difference does not prove that nobody benefited from either practice. It does mean that greater intensity did not earn a convincing superiority claim in that setting.

Should you copy the fast breathing and holds?

These papers do not provide a universal home protocol. The researchers excluded people with relevant health risks, and the UK study reported some unwanted short-term effects. Tolerability in a selected healthy sample cannot establish safety for everyone.

There is no reason to make a calming break into a competition for the longest hold or most powerful sensation. This article deliberately does not provide hyperventilation or prolonged breath-holding instructions. Stop a practice that makes you feel unwell rather than treating discomfort as proof that it is working.

Where does a brief pause fit?

A comfortable pause may be one part of an ordinary routine; it does not remove workplace pressures, relationship problems or other sources of stress. If symptoms persist or interfere with daily life, appropriate mental-health support matters more than escalating an online technique.

The transferable lesson is to ask what outcome you want and what evidence actually supports it. Feeling a little calmer now can be worthwhile without turning that experience into a promise about your long-term health.

Evidence context: the US paper reports donor and Stanford award support; WHOOP donated wrist devices, and one author became a WHOOP adviser after data collection. The UK trial reports Sylff and PsyDAO funding, and a lead author disclosed breath-teacher training. Both studied selected adults, not clinical treatment populations. Educational article; not clinically reviewed.

Published 11 October 2026 · Sources checked 11 October 2026. Suggest a correction.