Fitness
CO₂ Tolerance BOLT Test
CO₂ tolerance BOLT test counts seconds after a normal exhale until the first urge to breathe—a simple CO₂ comfort snapshot, not a maximal breath-hold contest.
CO₂ tolerance BOLT test (body oxygen level test) measures seconds you can hold breath after a normal exhale until the first definite urge to breathe—roughly reflecting comfort with higher carbon dioxide, not maximal apnea skill. Take it morning, seated, after five minutes calm nasal breathing; retest weekly, not daily.
Low scores suggest starting gentle reduced-breathing drills, not aggressive holds.
Common questions
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What BOLT score is typical for trained athletes?
Ranges vary widely—many recreational athletes sit roughly twenty to thirty seconds; lower scores merit gentle progression, not forced maximal holds. Interpret trends, not one number.
Related terms
Put CO₂ Tolerance BOLT Test into practice
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