Why You Overheat at Night

Most people blame their mattress. But sleeping hot usually has multiple overlapping causes — and the fix depends on knowing which ones apply to you. Browse the categories below to find what’s driving your symptoms.

Diet, Alcohol, and Lifestyle Habits That Cause Night Sweats

What you consume in the hours before bed can raise your core body temperature, trigger sweating, and fragment your sleep — often without you realizing the connection.

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Environmental Factors That Make You Sleep Hot

Your bedroom environment is the most controllable factor in sleeping hot. Most people are surprised how much difference the right changes make.

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Hormonal Causes of Sleeping Hot and Night Sweats

Hormones are your body's thermostat system. When they fluctuate or fall out of balance, your sleep temperature is often the first thing affected.

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How Sleepwear and Bedding Affect Sleep Temperature

What's touching your skin all night has an outsized effect on your sleep temperature — and most people are using the wrong materials.

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Medications That Cause Night Sweats

If your night sweats started or got worse around the time you began a new medication, the drug may be the cause. This is more common than most patients are told.

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Sleep Disorders That Cause Overheating at Night

Some sleep disorders interfere directly with your body's ability to regulate temperature — and they're far more common than most people realize.

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Your Circadian Rhythm and Body Temperature: Why Timing Matters

Your body temperature isn't static at night. It follows a precise programmed rhythm — and when that rhythm is disrupted, hot nights follow.

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Medical Conditions That Cause Night Sweats

Night sweats that soak your sheets aren't always about your bedroom temperature. Sometimes the cause is medical.

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