The average amount of fluids consumed during the shift was 180 ± 102 ounces. Electrolyte packets, provided by the employer to replace electrolytes lost from excessive sweating, contained 40 mg potassium chloride, 18 mg calcium phosphate, and 9 mg magnesium carbonate. Among those reporting consumption of the electrolyte packets during their shifts (12 of 60), the average number of packets used was 3.1. Participants who reported drinking alcoholic beverages during the 24 hours before starting work (11 of 60) consumed an average of 3.5 alcoholic beverages.