Five evidence tiers, 1 to 5

The Breath Honesty Scale

Most breathwork content treats every technique as equally proven. It is not. EYANA puts a number on every one, so you can tell the difference between what is solid and what is wishful.

Hedging is not weakness. It is what makes the confident claims credible. The Breath Honesty Scale runs from 5 to 1. A 5 means the evidence is strong and replicated. A 1 means a popular claim the evidence contradicts, the kind EYANA will not make. Every technique page carries its rating near the top.

5

Solid

Multiple well-designed trials or systematic reviews, replicated, consistent direction.

4

Promising

Multiple studies, consistent direction, with methodological limits (small samples, short duration).

3

Early

A single good study or small studies only. Promising but not yet replicated.

2

Theoretical

Mechanistically plausible, with little or no clinical trial evidence. Practitioner experience only.

1

Unsupported

A popular claim the evidence contradicts or does not support. EYANA does not make it.

Eight ratings, applied

A few ratings, applied

Slow breathing at six breaths a minute, acute heart rate variability 5 \u00b7 Solid
The physiological sigh, acute stress reduction 4 \u00b7 Promising
Slow breathing, modest blood pressure reduction 4 \u00b7 Promising
Box breathing, stress reduction (as slow breathing) 4 \u00b7 Promising
4-7-8 breathing, its specific effects 2 \u00b7 Theoretical
The Wim Hof method, immune modulation 2 \u00b7 Theoretical
"Boost your immune system" 1 \u00b7 Unsupported
"Rewire your nervous system" 1 \u00b7 Unsupported

Notice that two of the most repeated claims in wellness marketing, boosting immunity and rewiring your nervous system, sit at 1. That is not cynicism. It is what the evidence says. EYANA would rather tell you the truth and keep your trust.

EYANA is health education, not medical advice. It does not diagnose, treat, or replace your physician, and nothing here is a reason to start, stop, or change any medication or treatment. If you have a heart or lung condition, read the Mogire Contraindication Framework first and talk to your doctor. If you have chest pain, fainting, or a racing heart that will not settle, seek medical care.

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