Your body dips to its lowest core temperature about 2 hours after you turn your lights off. Melatonin helps manage sleep, and its release preps you for slumber. That, in turn, nudges your body temp to drop. ThatвЂ™s when you start to feel less alert and likely start to think of sleep.ДЄs your body cools, your pineal gland, located in your brain, releases rising amounts of the hormone melatonin. But itвЂ™s a strategic shift.ДЄbout 2 hours before you head to bed is when this cooling process starts. That might not sound like a drastic drop. Your circadian rhythm, also known as your body clock, lowers your core body temperature by as much as 2 degrees during the night. No matter what drives up the temperature in your environment, it works against your bodyвЂ™s natural ways to support a solid nightвЂ™s sleep.

вЂњIt was so disruptive and uncomfortable.вЂќ Heed Your BodyвЂ™s Thermostat вЂњWe would both wake up sweating in the night,вЂќ says Rudwick, who lives in Newberg, OR. Their mattress retained body heat and blasted it back at them. The culprit: the heat coming from their memory foam mattress, which she and her husband had had for a few years. She struggled to get a good night of sleep. Heat Is the Enemy of SleepДЇor Kaitie Rudwick, the problem wasnвЂ™t as easy to solve as a thermostat set too high. Once youвЂ™ve done that, you need to check a couple of other things in your bedroom to get the temperature just right. He's theВ research director of the sleep disorders program at the University of Miami Miller School of Medicine.

вЂњYou want to make sure your sleep temperature is correct,вЂќ says Alberto Rafael Ramos, MD.

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