Temperature in REM sleep is best described as?

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Multiple Choice

Temperature in REM sleep is best described as?

During REM sleep, the body's thermoregulatory controls are dampened, so core temperature tends to drift toward the surrounding environment rather than being actively kept at a strict set point. This pattern fits poikilothermy, where body temperature varies with ambient conditions rather than being constant. While humans are generally endothermic and maintain a relatively stable temperature most of the time, REM sleep temporarily reduces that stability, making temperature more environment-dependent. Homeothermic would imply constant internal temperature, which REM sleep does not guarantee, and heterothermic would imply a more variable or mixed pattern than the straightforward environmental dependence seen here.

During REM sleep, the body's thermoregulatory controls are dampened, so core temperature tends to drift toward the surrounding environment rather than being actively kept at a strict set point. This pattern fits poikilothermy, where body temperature varies with ambient conditions rather than being constant. While humans are generally endothermic and maintain a relatively stable temperature most of the time, REM sleep temporarily reduces that stability, making temperature more environment-dependent. Homeothermic would imply constant internal temperature, which REM sleep does not guarantee, and heterothermic would imply a more variable or mixed pattern than the straightforward environmental dependence seen here.

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