Why Do I Get So Hot When I Sleep? Top Full Guide 2022

Why Do I Get So Hot When I Sleep Top Full Guide 2022

There are a few reasons for the question: why do I get so hot when I sleep. It could be due to your body composition, bedding, or room temperature. And you may sweat more than usual. If you have a fever, your body will also produce more heat.

1. Humidity And Temperature In The Room

If you’re too hot at night, the temperature in your room may be too high. Heat exposure throughout the night promotes alertness and lowers slow-wave and rapid eye movement sleep.

Humidity can amplify the effects of heat by preventing sweat from evaporating.

2. Sleepwear And Bedding

Like the insulation in your home, your bedding functions as an insulator. Thicker bedding traps more heat than thinner bedding, and wearing thick sleepwear might also cause overheating.

Varying materials have different heat-retaining qualities, which might affect the quality of your sleep.

At temperatures of 63°F and 72°F (17°C and 22°C), Trusted source investigated the impact of cotton and wool sleepwear and polyester and wool bedding on sleep quality.

At 63°F (17°C), wool sleepwear was found to promote sleep onset more than cotton, although cotton announced deeper sleep at 72°F (22°C).

The researchers found no difference in sleep onset or quality between polyester and wool bedding at either temperature.

why do i get so hot when i'm sleeping

3. Pre-sleep Activities

The activities you engage in before bedtime may raise your body temperature, making it more difficult to fall asleep.

  • Exercise. Evening exercise had no harmful influence on sleep, according to a modest 2018 literature review, and had the opposite effect. However, sleep onset may be hampered if the strenuous activity is completed within one hour of bedtime.
  • Caffeine. Caffeine use close to bedtime has been shown to make falling asleep difficult. Caffeine is linked to a higher core body temperature and increased mental alertness, according to a small 2014 study.
  • Stressful activities. Your blood vessels tighten when you are stressed. According to a 2015 study with animals, this activity lowers your skin temperature while raising your core body temperature.
  • Sex. Sex can help you sleep better by releasing chemicals that help you relax. Violent sex that boosts your heart rate, on the other hand, may have the same effect as exercise.

Naked sleep is good or not? read this guide: Is It Better To Sleep Naked?

4. Who Sleeps With You

The combined temperature of your bodies can raise the temperature under your mattress and in your room if you sleep with other people or pets.

As a consequence of metabolism, bodies constantly emit heat. The area will heat up faster if there are more people and the space is smaller.

A human body’s typical temperature is 98.6°F (37°C). If the room temperature is higher, your body will absorb heat and chill the space.

why do get so hot when i sleep

5. Prescription Drugs

A wide range of drugs has the potential to elevate your body temperature or interfere with your body’s capacity to regulate it.

The following are some examples of commonly used drugs that impact thermoregulation:

  • anticholinergics
  • Beta-lactam antibiotics, including penicillin and Cephalosporins
  • carbamazepine
  • Diabetes medication
  • diuretics (water pills), especially combined with angiotensin-converting enzyme (ACE) inhibitors or angiotensin II receptor blockers
  • Hormone therapy medication
  • Methyldopa
  • Aspirin and acetaminophen (Tylenol), are painkillers.
  • Phenytoin
  • procainamide
  • psychotropics
  • quinidine
  • SSRIs or tricyclic antidepressants
  • Steroids such as prednisone and cortisone
  • Drugs such as MDMA and ecstasy.

6. Hormones

Hormonal imbalances might cause night sweats or hot flashes.

The premenstrual syndrome causes night sweats in many women due to variations in estrogen and progesterone levels.

Menopause is characterized by night sweats and hot flashes, two of the most prevalent symptoms. These symptoms are caused by estrogen reductions and other hormonal alterations that aren’t fully understood.

Hormonal changes caused by pregnancy increase blood flow and boost core body temperature.

Hyperthyroidism and obstructive sleep apnea (which affects many hormones) are two more possible causes of nighttime sweating.

Maybe you are concerned about apnea sleep, read this guide: Can Sleep Apnea Kill You?

Why Do I Get So Hot When I Sleep

7. Infection And Illness

Various conditions can cause a rise in body temperature or night sweats. The following infectious disorders can cause a rise in body temperature:

Other bacterial infections include :

  • flu
  • strep throat
  • pneumonia
  • tuberculosis.
  • colds

Other factors that may cause you to become overheated at night include:

  • cancer
  • coronary artery disease (CAD)
  • hyperhidrosis hyperhidrosis hyperhidrosis hyperhidrosis hyperhidrosis hyperhidros
  • hyperthyroidism
  • long-term stress

How does your body temperature affect your sleep?

During 24 hours, your body temperature follows a natural pattern. Usually, your body temperature is as follows:

  • drop in the evening
  • increases in the morning
  • peaks later in the day

If your body temperature does not drop in the evening, it can affect your sleep.

People self-select their bedtime at the period when their body temperatures drop the highest, according to a study conducted by Trusted Source with humans and animals.

When Should You Be Worried About Night Sweats?

Having night sweats regularly is usually nothing to worry about. However, if you have other symptoms and night sweats, you should consult your doctor. Chills, fever, unexplained weight loss, and soreness are some of the other symptoms.

If you have night sweats frequently, keep track of how often you get them and the symptoms in a diary. This can assist you and your doctor in determining the source of nighttime sweating.

When Should You Be Worried About Night Sweats

Solutions To Feeling Overheated At Night

Here are some suggestions for preventing nighttime overheating.

The temperature in the room is too high.

  • Turn down the heat.
  • It’s time to open a window.
  • Use a dehumidifier to remove moisture.
  • Use a fan or air conditioning to keep the room cool.
  • Place your mattress on the ground.
  • Before going to bed, take a cold shower.


  • Reduce the number of blankets you use.
  • Select textiles that are light and breathable.

Pre-sleep routines

  • Exercise for at least 1 hour before bedtime.
  • Caffeine should not be consumed in the late afternoon or evening.
  • Avoid stressful activities in the hours leading up to bedtime.
  • Avoid having vigorous sex before going to bed (non-vigorous sex may improve sleep quality).

Solutions To Feeling Overheated At Night

Sleeping With Other People Or Pets

  • If you’re sharing a bed with others, consider using a separate blanket.
  • Open a window or leave the door open if possible.


  • Contact your doctor to check if your meds can be adjusted.
  • Ask your doctor about the best therapy options for your specific hormonal problem.
  • If you have a sickness or an infection, try to treat the underlying cause.


Although there are ways to lessen sweating during sleep, you’ll want to work with your doctor to determine if this is a problem. If you have any health issues, you’ll need to have a sweating disorder evaluated.

You can also watch your body temperature and adjust it by using bed sheets or cooling products. Repopny hopes this article helped answer your questions.

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