Sleeping in a cold room isn't inherently bad; in fact, experts generally recommend a cool bedroom (15.5°C to 20°C / 60°F to 68°F) to help lower your core temperature, promoting deeper and faster sleep. However, if the room drops below 15.5°C (60°F), it can become too cold, leading to disrupted sleep, muscle stiffness, and elevated blood pressure.
Research on thermal comfort in the sleeping environment suggests that thermal environment is one of the primary causes of sleep disturbance among many other factors such as physical states, mental states and bedding conditions. Many studies show that cold indoor environments negatively affect sleep comfort and quality.
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.
As the weather turns colder, many people with multiple sclerosis (MS) notice changes in how their symptoms feel. While heat sensitivity is more common, some people find that the cold also affects their MS, making symptoms like stiffness, muscle spasms, or numbness feel worse.
Does Being Cold Make You Sick? Cold weather and frigid temperatures themselves do not manifest common colds or the flu. But physically being cold, physiologically, might contribute to a weakened immune system, therefore making your body more susceptible to viruses and airborne illnesses.
In colder temperatures, the air tends to be drier, causing increased nasal congestion. For those with OSA, this may intensify airflow resistance, making it more difficult to breathe. Additionally, cold air can cause airway constriction and inflammation, further complicating the breathing process during sleep.
10 hours before bed: No more caffeine. 3 hours before bed: No more food or alcohol. 2 hours before bed: No more work. 1 hour before bed: No more screen time (shut off all phones, TVs and computers).
There are lots of symptoms that MS can cause, but not everyone will experience all of them.
Cold intolerance or cold sensitivity has been defined as a set of symptoms including pain, tingling, numbness, chills, stiffness, weakness, swelling or skin color changes on exposure to cold. Neurovascular, humoral and endocrine factors play role in the pathogenesis of cold intolerance1.
From the 1950s until the early 1980s, the effects of heat on people with MS were used in the diagnosis of the condition. The hot bath test involved lying in a bath of warm water. If this caused or worsened neurological symptoms, it was taken as evidence that the person had multiple sclerosis.
Because a bedroom that's too cold could negatively impact your sleep as much as one that's too hot: sleeping in a cold bedroom of about 12°C (53°F) will make it difficult to relax and drop off, while sleeping in a room temperature of over 24°C (71°F) is likely to cause restlessness.
Koalas are thickset arboreal marsupials with a thick grey fur. Found only living in Australia, they mainly live in the eucalyptus trees and spend around 22 hours of their time sleeping (90%). They spend the other 10% of their day eating and sitting around.
Researchers also discovered that colder environments help the body produce more melatonin, a hormone essential for deep, restorative sleep. Melatonin doesn't just regulate sleep cycles — it also acts as a powerful antioxidant linked to slower aging, improved cellular repair, and lower inflammation.
The bedroom temperature
So here's a fun fact: in Japan, people sleep in rooms that are around 55°F (13°C) on average. In the US? Americans like things warmer—68 to 72°F (20–22°C) kind of warm. Turns out, your body wants to cool down at night.
Age also affects your sleep architecture — how you move through the stages of sleep. Older adults tend to spend less time in deep sleep and more time in lighter stages of sleep. As a result you may wake up more often. Older adults wake an average of three to four times nightly, and are more aware of being awake.
Hands and Feet Suffer the Most
Additionally, the capillaries in your fingers and toes are very thin. As a result, your hands and feet get cold first, which means that these are the body parts that need the most protection from the cold.
Among women, temperatures were significantly lower in all age groups more than 40 years old compared with the 20- to 29-year-old age group.
Nerve Irritation, Not Damage
If your tooth is only sensitive to cold, the nerve inside may just be irritated—not infected or dying. This is usually a reversible condition, meaning it can improve once the underlying issue (like a cavity or exposed dentin) is treated.
So while MS can occur at any age, it mostly makes its first appearance in people between the ages of 20 and 40. Low levels of vitamin D and low exposure to sunlight, which enables our body to make vitamin D, are associated with an increased risk of developing MS.
The 'MS hug' is symptom of MS that feels like an uncomfortable, sometimes painful feeling of tightness or pressure, usually around your stomach or chest. The pain or tightness can feel like a tight band stretching under your breasts, around the ribs and back or stomach, or it can be just on one side.
Some of the most common symptoms include: feeling extremely tired (fatigue) problems with your eyes or your vision, such as blurred vision or eye pain. numbness or a tingling feeling in different parts of the body.
Japanese sleep specialists recommend creating a one-hour wind-down routine before bed. Dim the lights, avoid screens, and do calming activities like reading or gentle stretching. This signals to your body that sleep time is approaching.
Looking at screens before bed
Although we need melatonin-suppressing blue light to keep us alert during the day, blue light at night-time is a big no. Being exposed to blue light right before sleep can have serious impacts on sleep quality and circadian rhythm.
Why Do Autistic People Sleep with Dinosaur Hands? For many autistic adults, this sleep posture provides comfort and regulation. The act of curling one's hands inward may provide a sense of security, akin to wrapping oneself in a protective cocoon before drifting into sleep.