Sweat Rate and Fluid Replacement

Personal sweat rate and rehydration target from a weigh-in/weigh-out (sweat_loss = (pre-post) x 16 + fluid - urine), with the percent body-weight loss flagged against the 2% performance-degradation line. Sets a drinking plan for the next shift.

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Formula and source

sweat_loss = (pre - post) x 16 + fluid - urine; sweat_rate = sweat_loss / hours; pct_bw_loss = (pre - post) / pre x 100; rehydration = 1.5 x max(0, deficit).

ACSM / NATA position on fluid replacement (weigh-in/weigh-out method), by name.

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