Alright, I’m going to take an educated leap here and write this as a **feature-style blog post about *sleeping cold*** — the kind of headline you often see truncated as *“These are the consequences of sleeping co… See more”* on social media. If you meant a different “co-”, tell me and I’ll rewrite it fast.
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For some people, sleeping cold is a lifestyle choice. They crank the air conditioning down, kick the blankets aside, and swear they sleep better when the room feels like a winter cabin. For others, sleeping cold isn’t a preference at all—it’s a necessity driven by climate, finances, or poor insulation.
But while “sleeping cold” is often praised as healthy, refreshing, or even optimal for sleep quality, the reality is more complicated. The temperature you sleep in—and how cold your body gets overnight—can have real consequences for your health, comfort, and long-term well-being.
Some of those consequences are surprisingly beneficial. Others are less talked about, and in some cases, potentially harmful.
So what *really* happens when you sleep cold night after night?
Let’s break it down.
## Why People Choose to Sleep Cold
The idea that cooler temperatures improve sleep didn’t come out of nowhere. Research suggests that the human body naturally lowers its core temperature as part of the sleep cycle. A cooler environment can help signal to the brain that it’s time to rest.
That’s why many sleep experts recommend keeping bedroom temperatures somewhere between 60–67°F (15–19°C). In that range, most people fall asleep faster and experience fewer night awakenings.
But there’s an important distinction between *sleeping cool* and *sleeping cold*—and crossing that line is where consequences start to show.
## Your Body Doesn’t Fully Rest When It’s Too Cold
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