How Much a Blanket Can Raise Your Body Temperature?

December 14, 2022
4 min read

Can Blankets Increase Body Temperature?

Blankets are a common household item that many people use to stay warm. But can they actually increase body temperature? The answer is YES. Blankets can help to increase body temperature.

When we feel cold, our bodies try to conserve heat by constricting blood vessels and reducing blood flow to the extremities. This helps to keep our core body temperature stable. However, this can also make us feel colder, especially in our hands and feet.

One way that blankets can help increase body temperature is by trapping heat generated by our bodies. When we are wrapped in a blanket, the heat from our bodies is trapped between the blanket and our skin, creating a warming effect. This can help to raise our body temperature, making us feel warmer overall.

Top view of man sleep with blanket

In addition to trapping heat, blankets can provide insulation against the cold outside air by creating a barrier between our bodies and the cold air. This helps to increase body temperature, as our bodies don’t have to work as hard to maintain a stable temperature.

Factors That Affect How Much Body Heat a Blanket Can Retain

There are several factors that can affect how much body heat a blanket can retain, including the type of material used, the thickness and weight of the blanket, and the design and construction of the blanket.


The type of material used in the construction of the blanket plays a significant role in its ability to retain body heat. Natural materials such as wool, down, and cotton are known to be excellent insulators. As a result, they can effectively trap body heat. On the other hand, synthetic materials such as polyester and acrylic tend to be less effective at retaining heat.

Thickness and Weight

The thickness and weight of the blanket can also affect body heat. A thicker and heavier blanket will typically provide more insulation and be able to retain more body heat. In comparison, a thinner and lighter blanket may be less effective at keeping heat.


The design and construction of the blanket. Blankets with a tight weave or a high thread count will be more effective at trapping body heat, while blankets with a loose weave or a lower thread count may be less effective.

Type of Fills

The type of fill can be considered as another factor. Down or feather fill tends to be more effective at retaining heat, while synthetic fill may not be as effective.

What’s The Ideal Temperature For Your Body Under A Blanket?

The ideal temperature for your body under a blanket is a highly personal and individualized matter. It depends on several factors, including age, health, and personal preferences. However, in general, it is recommended that your body temperature should be slightly cooler than your average body temperature when you are under a blanket.

Your body temperature is typically around 98.6 degrees Fahrenheit (37 degrees Celsius), but this can vary depending on your age, health, and activity level. When under a blanket, your body temperature can rise, making you feel warm and comfortable. However, if your body temperature rises too much, you may feel too hot and uncomfortable, which can lead to sweating and discomfort.

When Should You Not Use A Blanket?

First and foremost, blankets should not be used when there is a risk of suffocation. This is especially important for infants and small children, who can easily become trapped under a blanket and struggle to breathe.

Additionally, older adults with cognitive impairments or mobility issues may also be at risk of suffocating under a blanket. In these cases, it is best to avoid blankets altogether or to use a lightweight, breathable option.

Blankets should not be used when they may cause discomfort or irritation. For instance, individuals with allergies or sensitivities to certain materials, such as wool or synthetic fibers, may experience irritation or allergic reactions when using a blanket made from those materials. Individuals with skin conditions, such as eczema or psoriasis, may find that certain types of blankets worsen their symptoms.

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