Nutrition
Humid Heat Sweat Evaporation Limit
Humid heat sweat evaporation limit slows cooling—higher fluid and sodium loss per hour even when skin feels constantly wet.
Humid heat sweat evaporation limit means high moisture in air slows cooling—sweat drips instead of evaporating, so you lose more fluid and sodium per hour with less perceived drying. Heart rate drifts at the same pace.
Electrolyte drinks beat plain water on long humid sessions. Clothing that holds moisture worsens skin maceration.
Common questions
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Does more sweat always mean better cooling in humidity?
No—un-evaporated sweat wastes fluid. Cooling efficiency drops; replace fluids and sodium and reduce pace or shade when drift spikes.
Related terms
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