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🌡️ Why Do You Feel Cold During Fever – Even When Your Body Is Burning?

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By Rajaram Kharat

It's a strange feeling, isn’t it? Your body is actually hot – your temperature is rising – yet you’re shivering, reaching for a blanket, and feeling unusually cold. It almost feels like your body is sending mixed signals. But in reality, it’s doing exactly what it’s supposed to do.



When you get a fever, your body isn’t just “overheating” – it’s actively fighting something, usually an infection. To do this, your brain resets your body’s internal thermostat to a higher temperature. Suddenly, what used to feel normal now feels too cold. Even though your body temperature is rising, your brain thinks you’re below the new “set point.”

That’s when the chills begin.

Your body reacts as if it needs to warm up quickly. Muscles start to shiver – not randomly, but as a way to generate heat. Blood vessels near your skin tighten, reducing heat loss. You may feel cold, get goosebumps, and want to wrap yourself in layers. All of this is your body’s way of reaching that new, higher temperature.

Once your body reaches the set temperature, the chills usually stop. You may even start feeling warm or sweaty. Later, when the fever begins to break, your brain lowers the set point again – and that’s when you suddenly feel hot and start sweating, as your body tries to cool down.

So that confusing feeling – being cold while having a fever – isn’t a mistake. It’s a carefully designed response. Your body is raising the temperature on purpose because many viruses and bacteria struggle to survive in higher temperatures.

In a way, those chills are a sign that your body is working hard behind the scenes – protecting you, even if it feels uncomfortable.

Next time you feel cold during a fever, you’ll know – it’s not weakness. It’s your body fighting back.



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