Nutrition
Sweat Rate Heat Acclimation Shift
Sweat rate heat acclimation shift raises earlier, higher-volume sweat in heat—fluid and total sodium needs often rise even if sweat tastes less salty.
Sweat rate heat acclimation shift is the training adaptation where sweat starts sooner, spreads across skin, and often increases total fluid loss per hour while sodium concentration per liter may drop. Acclimated athletes need more fluid and sometimes more total sodium per hour even though sweat tastes less salty.
Retest sweat rate after a two-week heat block before a hot race.
Common questions
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Should you drink less because acclimated sweat is less salty?
No—total sodium loss per hour can stay high or rise from greater sweat volume. Retest rate and adjust fluids; do not cut salt based on taste alone.
Related terms
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