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Content: "getting used to it" and "not getting used to it"! Acclimatization to heat: In hot climates physiological adaptations occur which help to cool the body: -water intake increases (note it's better to drink warm fluids because these will elevate core temperature and encourage sweating to increase cooling, whereas cold fluids decrease core temperature, which discourages sweating to decrease cooling, which increases discomfort. -sweating increases. With "training" sweat glands produce more sweat. -blood volume increases and more blood is diverted to the skin (may even get a "red" face)
-behavioral changes occur: less clothing is worn, or heat is avoided e.g. resorting to an air-conditioned room (an example of getting used to not getting used to it because such behavior does not produce physiological acclimatization). Heat acclimatization is best achieved by actually doing work in hot climates e.g. exercise. The best results occur when exposure lasts for at least one hour or at least every other or every day for at least 2 to 3 weeks (some acclimatization occurs within 4-7 days, and reasonably in 12-14 days).