To replace the four to eight quarts of sweat that may be produced in hot weather, people require one half to one cup of water every 20 minutes. Eat small meals more often. Don't use salt tablets unless directed by a physician. Acclimate yourself if you must work outdoors. To achieve acclimation, a person must work in the heat at the activity level required by the job.
Acclimatization involves a stepwise adjustment to heat over a period of a week or sometimes longer.
Repeat this procedure anytime you miss a week or more of work.