Hot summer nights can make it tough to get a good night’s sleep, but there are simple ways to cool down your bedroom for better rest.

Dr. Michael Breus, a clinical psychologist and sleep medicine expert, explains that sleep follows your core body temperature cycle. As your body temperature peaks at bedtime and then drops, it signals your brain to release melatonin, helping you fall asleep. Advertisement

"Melatonin is kind of that key that starts the engine for sleep," explains Breus. "You got to have the temperature drop, which mean you got to have a cool environment."

The ideal room temperature for sleep is between 65 and 75 degrees, or 20 degrees off the daily high. To keep your bedroom cool, keep curtains and blinds closed during the day to block out heat. An air purifier can also h

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