Why some people can't sleep without a blanket : Science has the answer

Yes. There are several scientific reasons why some people prefer using a blanket even during hot summer weather. In most cases, it is completely normal and not a sign of illness.

Scientific reasons
1. Comfort and psychological security

Many people associate blankets with safety, relaxation, and sleep. This is called a "comfort cue."

Research suggests that light pressure from a blanket can reduce stress and help the body feel calm by activating the parasympathetic nervous system, which promotes rest and relaxation.

2. Habit and sleep conditioning

If a person has slept with a blanket since childhood, the brain may link a blanket with bedtime. Even in warm weather, they may find it difficult to fall asleep without one.

3. Body temperature changes during sleep

When we fall asleep, the body's core temperature naturally drops slightly. Some people feel chilly during this process even when the room is warm.

A thin sheet or blanket helps maintain a comfortable sleeping temperature.

4. Air conditioning or fan use

Many people sleep under fans or air conditioners. Air movement can increase heat loss from the skin, making them feel cool enough to want a blanket.

5. Individual differences

People vary greatly in how they perceive temperature. Age, body weight, metabolism, hormone levels, and circulation all influence whether someone feels hot or cold.

Common myths
Myth 1: Using a blanket in summer means the person is sick