'Studies have shown that in general, the optimal room temperature for sleeping is quite cool, around 60 to 68 degrees Fahrenheit, and temperatures much above or below this range can lead to restlessness.
But a new study suggests there are nuances to this phenomenon, and that a restful night’s sleep may be more complicated than simply turning down your thermostat.
Thermoregulation—your body's heat distribution system—is strongly linked to sleep cycles. Even lying down can induce sleepiness by redistributing your body heat from your core to your periphery.'
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