What happens if your room is too cold at night?

Author: Mr. Axel Kessler  |  Last update: Monday, August 4, 2025

Sleeping too cold Drerup. Blood vessels become constricted, breathing becomes shallow and it puts extra pressure on our cardiovascular system to get our body temperatures regulated again, she adds. If your bedroom temperature is lower than 60° F, it's too cold.

What happens if you sleep in a room too cold?

Cold air can dry out your throat tissue and can cause severe irritation. Symptoms can be made worse when breathing through the mouth rather than the nose. Because of this, it is common for people to have a sore throat or catch a cold from sleeping in a cold room.

How cold is too cold for a bedroom at night?

However, experts generally recommend keeping the temperature of your bedroom between 15.6 and 20 degrees Celsius. A temperature that's too high or too low can have a negative effect on sleep. Too much humidity also leads to restlessness, insomnia, and a disrupted sleep rhythm.

Can you get ill from sleeping in a cold room?

Cold air inflames lungs and inhibits circulation, increasing the risk of respiratory conditions, such as asthma attacks or symptoms, worsening of chronic obstructive pulmonary disease (COPD), and infection.

What temperature is dangerously cold to sleep in?

If your bedroom is any colder than 58°F, it's too cold. Around this temperature is when your body can't maintain a natural sleeping temperature for itself. You can try to pile on the blankets, but this restricts breathing and risks you waking up feeling hot and stuffy.

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Is 55 too cold to sleep in?

Most people sleep best at a cool temperature, around 65 degrees Fahrenheit. But there is some variation depending on the person. Some people sleep better warmer, at about 72 degrees, while others do the best sleeping quite cold, at around 55 degrees.

What happens if you sleep in extreme cold?

Prolonged exposure to cold will eventually use up your body's stored energy. The result is hypothermia. Body temperature that is too low affects the brain, causing unclear thinking and inhibiting body movement. This could cause a person to not know what is happening and he or she won't be able to respond normally.

What is an unhealthy room temperature?

The World Health Organization recommends a thermostat setting no lower than 68 degrees while you're home. If you have children or seniors in your house, that number increases to at least 70 degrees. If your house is too cold, it can cause problems with blood pressure and circulation, as well as affect your heart rate.

Is breathing cold air at night bad?

According to pulmonologist Dr. Michael Scharf, inhaling cold air may cause bronchial irritation and cough. If you have asthma or chronic obstructive pulmonary disease (COPD), the cold air “may induce bronchial tightening or constriction leading to cough, wheeze and shortness of breath.”

What happens if you sleep without a blanket?

Increased Stress Levels: Without the calming effect of a blanket, your body may experience heightened stress during the night. Potential Sleep Deprivation: Over time, the absence of a comforting blanket can lead to significant sleep deprivation, impacting overall health and mood.

What is the lowest safe room temperature?

According to the World Health Organisation and the UK Government guidelines, 18°C is the minimum temperature any room should be to ensure good health.

How cold is too cold inside a house?

The World Health Organization (WHO) recommends setting your thermostat no lower than 64 degrees (F) in the Winter months while people are in the home. If there are infants or elderly individuals, they recommend keeping the temperature at 70 degrees at a minimum.

Why is my bedroom the coldest room?

So why can one room in your home be colder than others? Blocked or Covered Vents: One of the most common reasons for a cold room is blocked or covered vents. Heavy furniture or objects placed in front of vents can obstruct the flow of warm or cool air.

Are you more likely to have nightmares in a cold room?

Dreams sometimes become negative when the sleeper is cold, says Milton Erman, director of the Sleep Disorders Center at the Scripps Clinic and Research Foundation in La Jolla. Other bodily sensations also influence dreams.

Is it safe to sleep at 30 degrees?

“The consensus among most scientists is that anything higher than 25 or 27 is bad for sleep and potentially detrimental to health,” Baniassadi said. Heat affects sleep because the body signals the brain that it's time to fall asleep by lowering its core temperature. Sleeping in a hot room makes this difficult.

What is cold stress?

Cold stress occurs by driving down the skin temperature, and eventually the internal body temperature. When the body is unable to warm itself, serious cold-related illnesses and injuries may occur, and permanent tissue damage and death may result.

Can cold air at night make you sick?

“You can't get sick from being cold in general, whether you're outside or inside,” Fecher says. “Can you get sick from being cold? Yes, but not in terms of a cold or the flu. This comes from frostbite and/or even hypothermia.

At what temperature can your lungs freeze?

The bottom line: There is no risk you will freeze your lungs running anywhere on Earth. You can however get frost bite if you don't dress properly. Your symptoms suggest you have bronchospasm which may be helped by employing the above strategies. If your symptoms persist you may need to be medically assessed.

Is it good to sit in a cold room?

Sitting or sleeping in a cold room is not good for you and increases the risk of heart attack, stroke, chest infections and breathing problems.

Can I get sick from sleeping in a cold room?

Keeping your room too cold can even inhibit your body's ability to fight a cold or flu. Although cold temperatures will not cause you to get sick, it can diminish your body's immune function. 13.

What indoor temperature is too cold for humans?

The World Health Organization recommends keeping indoor temperatures between 64 and 75 degrees Fahrenheit for healthy people. The minimum temperature should be kept above 68 degrees Fahrenheit to protect the very young, the elderly, or people with health problems. Watch out for signs of hypothermia.

What is the healthiest temperature for a bedroom?

The best room temperature for sleep is approximately 65 degrees Fahrenheit (18.3 degrees Celsius). This may vary by a few degrees from person to person, but most doctors recommend keeping the thermostat set between 65 to 68 degrees Fahrenheit (15.6 to 20 degrees Celsius) for the most comfortable sleep.

What happens if your bedroom is too cold?

How cold is too cold? Below 13° - If your home is this cold, it may increase your blood pressure and risk of cardiovascular disease. 14-15° - If your home is this cold, you may be diminishing your resistance to respiratory diseases. 18° - This is the recommended night time bedroom temperature.

Can cold affect the brain?

Extremely cold environments can affect cognitive abilities, leading to professional risk and low productivity.

What are the side effects of staying in a cold room?

Circulatory problems, diabetes, arthritis and mental health issues can be made worse by living in a cold home. And people with respiratory conditions like asthma are also at risk, particularly if their home is damp and mouldy, which is often the case in under-heated, poorly ventilated homes.

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