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Heart rate, breathing, and the body's role in a trade

Posted: Mon Nov 02, 2026 9:05 am
by Fairman
Heart rate, breathing, and the body's role in a trade

A scalper in a live position can feel the body react: faster pulse, shallow breathing, tight shoulders. Those signals feed back into decisions, and they can be calmed deliberately.

Slow breathing, such as a long exhale, has a measurable effect on heart rate. A few breaths between trades can lower arousal enough to improve judgement. It sounds trivial and is surprisingly effective.

Posture and tension matter as well. Clenched hands click faster and less accurately. Stiff shoulders signal stress to the brain.

Some traders wear a heart rate monitor and record it with their trades. Patterns emerge: the trades taken at high arousal tend to be the worst, and the best ones come when the pulse is steady.

It is a rare example where a physical tool gives direct insight into trading psychology. Even without a monitor, simply noticing the body state before each entry adds a useful check.

A modest start is rating arousal from one to five before each entry and writing it in the log. After a few weeks, the relationship between the number and the outcome is hard to ignore.

What does the body do just before a bad trade, and is there a warning sign that could serve as a trigger to pause?