Evie Summers
Whether you prefer to sleep in a warm or cold room is a matter of personal preference, but there is evidence to suggest that sleeping in a cold room is better for your health. A cool room can help you fall asleep faster and get better sleep overall. As your body prepares for sleep, your body temperature starts to drop. Therefore, keeping your room cooler may signal to your body that it's time to sleep. A room that is too warm could take longer to fall asleep because your body is not getting the right signals.
Sleeping in a cold room can also improve sleep quality by stimulating melatonin production. This hormone is a sleep hormone but also an antioxidant and can play an important role in anti-aging. A cooler room can also help reduce certain types of insomnia and promote sleep.
However, it is important to note that a room that is too cold can also disrupt sleep. The ideal sleeping temperature is between 60 and 68 degrees Fahrenheit for the best night's sleep.
| Characteristics | Values |
|---|---|
| Ideal sleep temperature | Between 60 and 68°F (18-20°C) |
| Warmer sleep benefits | Relaxing, easier to fall asleep |
| Cooler sleep benefits | Deeper sleep, more restorative, increased melatonin and serotonin |
| Downsides of warmer sleep | Disrupts sleep, higher risk of obesity, higher energy costs |
| Downsides of cooler sleep | May lead to other health issues, extra pressure on cardiovascular system |
| Tips for warmer sleep | Warm bath or shower, cuddling, wearing socks or silk pyjamas |
| Tips for cooler sleep | Fans, air conditioning, cool sheets, blocking sunlight, breathable pyjamas |
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What You'll Learn
A cooler room temperature is better for sleep
When our bodies are too warm or too cold, they expend energy trying to regulate themselves, which can cause restlessness throughout the night. A cooler temperature allows the body to reach a deeper and more restorative sleep, as it does not need to divert energy to regulate its temperature.
Cooler temperatures can also aid in the release of melatonin, a hormone that helps manage sleep and is considered one of the best anti-aging hormones. By keeping the bedroom temperature within the optimal range, individuals can increase their chances of achieving longer, more restful sleep.
It is important to note that individuals have different preferences and tolerances for temperature when sleeping. Some people are ""hot sleepers," who tend to feel too warm and sweaty at night, while others are "cold sleepers," who prefer a warmer environment. Body composition, health conditions, and other factors can also influence whether a person feels too hot or too cold when sleeping. However, regardless of individual differences, maintaining a comfortable thermal sleep environment is crucial for sleep quality and overall health.
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Warmer temperatures can disrupt REM sleep
Our bodies naturally cool down as we fall asleep, and continue to lose heat throughout the night. Warmer temperatures can disrupt this process, affecting our sleep cycles and quality of rest.
REM (rapid-eye movement) sleep is the deepest stage of sleep, and it is crucial for feeling well-rested. Warmer temperatures can disrupt REM sleep, as our bodies struggle to regulate their temperature. When the room is too hot, our body temperature rises, disrupting the sleep initiation process. This can lead to restlessness and difficulty falling or staying asleep.
Dr. Drerup, a sleep expert, notes that "heat is a huge disruptor for REM sleep". They suggest that bedroom temperatures above 70° F (21° C) are too high, and will negatively impact sleep. Warmer temperatures can cause restlessness and interrupt the natural cooling process that helps us fall and stay asleep.
Optimal bedroom temperatures for adults are generally considered to be between 60° F and 67° F (15° C and 19° C). Sleeping in this temperature range can help facilitate REM sleep stability and promote deeper, more restorative sleep.
While sleeping in cooler temperatures is recommended, it is important to note that extremely low temperatures can also impact sleep. Dr. Drerup notes that while it may not affect sleep cycles as drastically as high temperatures, it can lead to health issues. When our bodies are too cold, they work harder to warm up, constricting blood vessels and affecting our cardiovascular system.
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Body temperature decreases to initiate sleep
A good night's sleep is dependent on a variety of factors, and temperature is a crucial one. The thermal environment plays a key role in the initiation and maintenance of sleep.
Our body temperature fluctuates throughout the day, usually peaking in the early afternoon and reaching its lowest point around 5 a.m. As bedtime approaches, our body temperature begins to drop, paving the way for sleep. This decrease in body temperature is a natural trigger for sleep, and it continues to drop during sleep. The circadian decline in core body temperature is a significant factor in the initiation of sleep, and this cooling effect helps us fall asleep and stay asleep.
Research has shown that warming up to four hours before bedtime can increase slow-wave sleep and NREM sleep, a deep sleep stage. However, the initiation of sleep occurs during the decline of core body temperature, and NREM sleep is associated with further reductions in core temperature. This cooling effect is an important part of the transition from wakefulness to sleep, and it is during NREM sleep that our bodies repair cells and consolidate memories.
To facilitate a good night's sleep, a cooler environment is recommended. A temperature between 60 and 68 degrees Fahrenheit is ideal, as it helps the body release melatonin, an essential hormone for sleep and other health benefits. Sleeping in a cooler environment can also reduce insomnia.
While some people are hot sleepers and some are cold sleepers, finding the right temperature for your body is essential for optimal sleep. Adjustments such as bedding, clothing, and thermostat settings can help create the ideal sleep environment.
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Insulation and clothing can help cold sleepers
Sleeping in a cool environment is generally considered beneficial for health and can help people fall asleep faster. However, the ideal temperature for sleep varies from person to person, and some individuals are "cold sleepers" who struggle to get comfortable in lower temperatures. Insulation and clothing can help cold sleepers maintain a warmer environment and improve sleep quality.
Cold sleepers often feel chilly at night and may turn up the thermostat or pile on extra layers of bedding. However, these measures may not always be sufficient or practical. Insulating the home can be an effective strategy for cold sleepers to maintain a warmer environment. Properly sealing windows and doors can prevent warm air from escaping and cold air from entering, helping to maintain a comfortable temperature.
For those who feel cold at night, wearing appropriate clothing to bed can make a significant difference. Cold sleepers can benefit from wearing socks, silk pyjamas, or even a hat to retain body heat. Additionally, using a sleeping bag liner or a cocoon liner inside a sleeping bag can provide extra warmth and comfort. These liners also help keep the bedding clean by acting as a protective layer.
Layering clothing under a sleeping bag can be an effective way to increase warmth, especially when camping or sleeping outdoors. Insulating layers, such as a down jacket or a heated vest, can be worn inside the sleeping bag to boost warmth. It is important to ensure that the clothing does not become compressed within the bag, as this can reduce its insulating properties.
Body composition also plays a role in temperature regulation during sleep. Muscle and fat act as insulation, helping to retain body heat. Individuals with lower body fat or muscle mass may feel colder at night due to reduced insulation. Additionally, factors such as diet, stress, and certain health conditions can influence body temperature regulation and contribute to feeling chilly at night.
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Hot sleepers should lower room temperature
The ideal sleeping temperature varies from person to person, but it is generally agreed that sleeping in a cooler environment is better for health and sleep quality. For adults, a bedroom temperature of between 60 and 67° F is recommended for optimal sleep. Temperatures above 75° F can disrupt sleep, while temperatures below 54° F can also negatively impact sleep quality.
Hot sleepers should pay particular attention to keeping their bedroom within the optimal temperature range. This can be achieved through the use of air conditioning, although this may not be a feasible long-term option. Instead, hot sleepers can try keeping a fan in their room, using curtains to block sunlight during the day, and improving the insulation of their home.
The human body naturally cools down in preparation for sleep, so a cooler environment aids this process. A lower body temperature encourages deeper sleep, as the body is not expending energy to regulate its temperature. This is particularly important for hot sleepers, as their bodies are already struggling to cool down. By lowering the room temperature, hot sleepers can prevent restlessness and achieve a more restorative night's rest.
Additionally, hot sleepers can make use of bedding and clothing to manage their body temperature. Breathable pajamas, bed sheets, and blankets are recommended for a comfortable sleep. For those who share their bed with a partner or a pet, the body heat from the other person or animal may provide extra warmth, so this should be considered when deciding on the number of blankets to use.
In summary, hot sleepers can improve their sleep quality by lowering their bedroom temperature and making adjustments to their bedding and clothing. A cooler environment facilitates the body's natural cooling process, leading to deeper and more restorative sleep. By taking these steps, hot sleepers can create a more comfortable and restful sleeping environment.
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Frequently asked questions
It is generally better to sleep in a cool room. A bedroom temperature of between 60 and 67° F is considered the best for adults, while a range of 65 to 70° F is optimal for babies and toddlers.
Our bodies naturally cool down when we sleep, so a cool room helps facilitate this process. If the room is too warm, our bodies will struggle to regulate temperature, leading to restlessness and trouble falling asleep.
If you are a "cold sleeper", you can try wearing socks, silk pyjamas, or using an extra blanket to warm up. You can also try adjusting your diet and eating enough calories to prevent your body from conserving energy and heat.
Sleeping in a cool room can help you fall asleep faster and achieve a deeper, more restorative sleep. It can also aid in reducing certain types of insomnia and promote the release of melatonin, which is an anti-aging hormone.
You can try adjusting your thermostat to the optimal temperature range and using a fan to cool the room. It is also important to dress for the season with breathable pyjamas, bed sheets, and blankets.
