Buteyko
At least one paper behind this review states what this option was measured against. That is not a ranking, and this option carries no evidence profile of its own.
Round-2 tier-3 flag: thin - under 4 full-text papers.
- acute stress / anxiety downregulationEmotional · 1 paper put it here (inferred by the extraction, not stated in the paper)
- daily regulation practiceEmotional · 1 paper put it here (inferred by the extraction, not stated in the paper)
- in-the-moment resetEmotional · 1 paper put it here (inferred by the extraction, not stated in the paper)
- pre-sleep wind-downSleep · 1 paper put it here (inferred by the extraction, not stated in the paper)
Breathing in and out through the nose. Progressively holding breath for longer periods, aiming for a Control Pause of 1 minute and a Maximum Pause of 2 minutes.
Effectiveness of Buteyko Breathing Technique on Test Anxiety among College Students: A Randomized Controlled Trial
Nothing states what this option's dose measures — no library step prescribes this option and its review states no dose unit.
No row states a dose or a time for this option.
Equipment is a property of the movement and is authored, never derived from the evidence corpus (docs/research/round2/ROUND2_KNOWN_CORRECTIONS.md §1). This option resolves to no catalogue exercise, so nothing has authored it yet.
R8's level field records who was eligible for the trial, not what a person needs before trying the practice, so it is not carried here.
No row states how to make this option harder or easier.
The papers behind this option report nothing on contraindications, which is not the same as saying there are none.
No row describes the setting.
No paper compares this option with another or calls it interchangeable with one.
A paper measuring one option against another does not make the two interchangeable, and it does not say which to choose. These are listed as what the papers did, and nothing here proposes a substitution.