Why does my body heat when I sleep 7 reasons? Have you ever woken up in the middle of the night drenched in sweat and wondering why your body is so hot? Or maybe you’ve noticed that your temperature seems to rise as soon as you hit the hay? Well, you’re not alone. Many people experience changes in their body temperature while they sleep, and there are several reasons why this happens.
In this article, we look at seven reasons why you may get hot when you sleep and examine possible solutions.
1. Room temperature and humidity
Room temperature and humidity are two important factors that can greatly impact our comfort and overall well-being, especially when it comes to our sleep quality.
Let’s start with temperature. Most experts recommend keeping your bedroom between 60-67 degrees Fahrenheit (15.5-19.5 degrees Celsius) for optimal sleep. This temperature range helps to promote the natural cooling of our bodies, which occurs during sleep and is important for maintaining a healthy sleep cycle. Additionally, keeping your bedroom on the cooler side can also help you fall asleep faster and stay asleep longer, as it can be difficult to sleep when you’re too hot.

On the other hand, if the room is too cold, you might find yourself shivering and unable to get comfortable. This can lead to tossing and turning, which can disrupt your sleep and leave you feeling groggy and unrefreshed in the morning.
Now, let’s talk about humidity. The ideal humidity level for a bedroom is between 30-50%. When the air is too dry, it can lead to dry skin, dry throat, and nasal passages, which can make it difficult to breathe comfortably. On the other hand, if the air is too humid, it can make you feel sticky and uncomfortable, and can also promote the growth of mold and bacteria in the bedroom.
In addition to impacting our comfort, humidity can also affect our sleep quality. When the air is too dry, it can cause us to snore or breathe heavily, which can lead to disrupted sleep. Conversely, if the air is too humid, it can make it harder to breathe comfortably, especially for those with allergies or asthma.
To ensure that your bedroom is at a comfortable temperature and humidity level, consider investing in a digital thermostat or humidity, which can help you monitor and adjust these factors as needed. Additionally, using a fan or air purifier can help to circulate air and maintain a comfortable environment in your bedroom.
Overall, paying attention to room temperature and humidity can go a long way in helping you get a good night’s sleep and wake up feeling refreshed and energized.
2. Bedding and sleepwear
The bedding and sleepwear we choose can play a significant role in how well we sleep at night. Let’s take a closer look at some factors to consider when selecting bedding and sleepwear that can help promote better sleep.
Bedding:
When it comes to bedding, the type of materials used can have a big impact on your sleep quality. Here are a few factors to consider:

- Material: The material of your bedding can affect your temperature, comfort, and overall sleep quality. For example, cotton bedding is a popular choice because it’s breathable and comfortable, while materials like flannel and fleece can be too warm for some people. Bamboo, silk, and linen are other materials that are becoming more popular due to their temperature-regulating properties.
- Thread Count: Thread count refers to the number of threads woven into each square inch of fabric. Generally speaking, the higher the thread count, the softer and more durable the fabric. However, thread count isn’t the only factor to consider when selecting bedding, as other factors like the type of cotton used can also impact the quality of the fabric.
- Size: Ensure that your bedding fits your bed properly. If your sheets are too small, they can come off during the night, while sheets that are too big can bunch up and be uncomfortable.
Sleepwear:
Sleepwear can also have a big impact on your sleep quality. Here are some things to consider when selecting sleepwear:

- Material: Just like with bedding, the material of your sleepwear can impact your temperature and comfort. Light, breathable fabrics like cotton or bamboo can help keep you cool and comfortable, while heavier fabrics like flannel can be too warm for some people.
- Fit: Sleepwear that’s too tight or too loose can be uncomfortable and disrupt your sleep. Look for sleepwear that fits well without being too restrictive.
- Style: While personal style is a matter of preference, it’s worth noting that sleepwear that’s too tight or constricting can negatively impact your circulation and sleep quality.
Ultimately, the key to selecting bedding and sleepwear that promote better sleep is finding materials and styles that are comfortable and breathable. Experiment with different options to find what works best for you, and don’t hesitate to make changes as needed to optimize your sleep environment.
3. Pre-sleep activities
Pre-sleep activities, also known as bedtime routines, are important for preparing your mind and body for sleep. Establishing a consistent pre-sleep routine can signal to your brain that it’s time to wind down and relax, which can help you fall asleep faster and improve the quality of your sleep. Here are some pre-sleep activities to consider incorporating into your bedtime routine:

- Dim the lights: Bright lights can disrupt the natural production of melatonin, a hormone that helps regulate your sleep-wake cycle. Dimming the lights or using low-wattage bulbs can help signal to your body that it’s time to sleep.
- Avoid electronic devices: The blue light emitted from electronic devices like smartphones, tablets, and laptops can suppress the production of melatonin, making it harder for you to fall asleep. Try to avoid using electronic devices for at least an hour before bedtime.
- Take a warm bath or shower: Taking a warm bath or shower can help relax your muscles and reduce tension, making it easier to fall asleep.
- Read a book: Reading a book or listening to a calming audiobook can help relax your mind and reduce stress, making it easier to fall asleep.
- Practice relaxation techniques: Techniques like deep breathing, meditation, or progressive muscle relaxation can help calm your mind and body, making it easier to fall asleep.
- Use aromatherapy: Scents like lavender, chamomile, and vanilla are known for their relaxing properties and can help promote better sleep. Try using essential oils, candles, or a diffuser to create a calming atmosphere in your bedroom.
- Stretch: Light stretching before bed can help release tension in your muscles and promote relaxation.
4. Who sleeps with you
Some people may sleep with a partner, while others may sleep alone. Roommates, children, and pets may also be present in the sleeping environment. It’s important to consider what sleeping arrangement works best for you and promotes the best possible sleep quality.

Factors to consider include comfort, noise, temperature, and potential disturbances. Ultimately, the goal is to create a sleeping environment that is conducive to restful and rejuvenating sleep.
5. Medication
While medication can be helpful in some cases for improving sleep, it’s essential to use them under the guidance of a healthcare professional. Several types of medications are commonly used to treat sleep problems, including:

- Over-the-counter sleep aids: These medications typically contain antihistamines, which can cause drowsiness. They are generally safe for occasional use but can have side effects like dry mouth, dizziness, and grogginess.
- Prescription sleep aids: Prescription sleep medications like benzodiazepines and non-benzodiazepines are stronger than over-the-counter options and can be habit-forming. They should only be used under the guidance of a healthcare professional and with caution.
- Antidepressants: Certain types of antidepressants can help treat insomnia and other sleep disorders. They work by affecting neurotransmitters in the brain that regulate sleep.
- Melatonin: Melatonin is a hormone that helps regulate the sleep-wake cycle. It is available as an over-the-counter supplement and can be helpful for people with certain sleep disorders, but should be used under the guidance of a healthcare professional.
6. Hormones
Hormones can play a significant role in regulating sleep-wake cycles and overall sleep quality. Here are some of the hormones that are involved in the sleep process:

- Melatonin: Melatonin is a hormone that is produced in the brain’s pineal gland and helps regulate the sleep-wake cycle. It is often referred to as the “sleep hormone” because it is released in response to darkness and helps promote feelings of drowsiness and relaxation.
- Cortisol: Cortisol is a hormone that is released by the adrenal glands in response to stress. High levels of cortisol can interfere with sleep and lead to feelings of alertness and wakefulness at night.
- Growth hormone: Growth hormone is released during deep sleep and is important for the growth and repair of tissues and muscles.
- Thyroid hormone: The thyroid hormone is essential for regulating metabolism and energy levels, which can impact sleep quality. Imbalances in thyroid hormone levels can lead to sleep problems.
- Estrogen and progesterone: These hormones are primarily associated with the female reproductive system, but they can also impact sleep quality. Changes in estrogen and progesterone levels throughout the menstrual cycle, pregnancy, and menopause can affect sleep patterns.
- Testosterone: Testosterone is a hormone that is primarily associated with male development, but it also plays a role in regulating sleep. Low levels of testosterone have been linked to sleep disturbances in men.
7. Illness and infection
Illness and infection can have a significant impact on sleep quality. When the body is fighting off an illness or infection, it may experience inflammation, pain, fever, and other symptoms that can make it difficult to fall asleep and stay asleep. Here are some examples of how illness and infection can affect sleep:

- Respiratory infections: Illnesses like the common cold, flu, and COVID-19 can cause congestion, coughing, and difficulty breathing, which can interfere with sleep.
- Chronic pain conditions: Chronic pain conditions like arthritis, fibromyalgia, and back pain can make it difficult to find a comfortable sleeping position and can cause interruptions in sleep.
- Gastrointestinal issues: Digestive issues like acid reflux, irritable bowel syndrome (IBS), and inflammatory bowel disease (IBD) can cause discomfort and pain that can interfere with sleep.
- Mental health conditions: Conditions like anxiety, depression, and post-traumatic stress disorder (PTSD) can cause sleep disturbances, including difficulty falling asleep, staying asleep, and waking up too early.
It’s important to address any underlying medical conditions that may be contributing to sleep disturbances. This may involve seeking medical treatment for the underlying condition, making lifestyle changes to improve sleep hygiene, and considering medication or other treatments to help manage symptoms.
If you are experiencing sleep disturbances due to illness or infection, it’s essential to talk to a healthcare professional to determine the best course of action for you.
Conclusion
In conclusion, sleep is a complex process that is influenced by a variety of factors. Room temperature, humidity, bedding and sleepwear, pre-sleep activities, sleep environment, and the presence of pets or partners can all impact sleep quality.
Hormones like melatonin, cortisol, growth hormone, estrogen, and progesterone can also play a significant role in regulating sleep-wake cycles. Illness and infection can cause a variety of symptoms that can interfere with sleep, including pain, inflammation, fever, and mental health conditions.
It’s important to address any underlying issues that may be contributing to sleep disturbances and to work with a healthcare professional to determine the best course of action for improving sleep quality. By taking steps to create a sleep-friendly environment, managing stress, and addressing any underlying medical conditions, you can improve your chances of getting a good night’s sleep.