Key takeaways
- 1Acute stress needs a fast tool — physiological sigh, not a ten-minute practice.
- 2One to three cycles resolves the peak. Longer sessions are for what comes next.
- 3After the peak, paced breathing (4:6 or 4-7-8) keeps arousal low for the rest of the situation.
- 4The five-minute Calm Nerves shift wraps the sigh in a soundscape.
The two-phase model
Acute stress has a spike and a tail. The spike is short — seconds to a minute — but it drives what happens next. If you resolve the spike fast, the tail collapses. If you let the spike stew, the tail can last hours. The tools for each are different.
For the spike
Physiological sigh. Two inhales, one long exhale. One cycle if you have twenty seconds, three cycles if you have a minute. This is the entire tool. No app required — the technique is small enough to carry with you.
For the tail
Extended exhale (4:6) or 4-7-8 for five to ten minutes. The point is to prevent the tail from turning into a whole afternoon of elevated arousal. This is where the Calm Nerves shift or Sleep Prep shift do useful work.
The training angle
Daily coherence practice lowers your baseline reactivity. The same event triggers a smaller spike when your baseline is lower. Reactive tools handle the moment; training tools prevent the moment from being as intense.