Question

How should you breathe when lifting and running?

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Differently for each, because they solve different problems — stability under load, and gas exchange during sustained effort.

Lifting: bracing. For heavy lifts, the standard technique is the Valsalva manoeuvre — take a breath in, hold it against a closed airway, and brace the abdominal wall as if about to be punched. This raises pressure inside the abdomen, which stiffens the trunk and protects the spine by giving the load something rigid to act against.

How to apply it: breathe in before the lift, brace, hold through the hardest portion, and exhale as you complete it or between repetitions. Do not hold for multiple repetitions.

The caveats are real. The manoeuvre sharply raises blood pressure and can cause light-headedness or fainting. Anyone with cardiovascular disease, uncontrolled hypertension, glaucoma, a hernia, or who is pregnant should get individual advice rather than adopting it by default. For light and moderate loads it is unnecessary — exhale on exertion is adequate.

Running: nothing exotic. Breathe through mouth and nose together, since the nose alone cannot move enough air at pace. Depth matters more than rate: shallow chest breathing is the usual fault, and breathing into the belly moves more air per breath with less effort.

On rhythmic patterns. Many runners naturally synchronise breathing to steps. Deliberate patterns are popular, and evidence that any specific ratio improves performance or reduces injury is weak. Use what feels natural; forcing a pattern frequently increases effort.

Nasal-only breathing is fashionable, has plausible mechanisms and limited evidence for performance benefit, and is reasonable at easy paces.

On a stitch. The cause is not settled; the practical measures that help are slowing, deepening the breath, and sometimes breathing out as the opposite foot strikes. Eating close to running makes it more likely.

The useful general point: breath rate is a good gauge of intensity. If you cannot hold a conversation, you are above an easy pace — which is the basis of the talk test and of most easy-run guidance.

General information, not medical advice.

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