Yes, sleeping with a window open for ventilation is generally good when you have a cold as fresh air helps reduce germs and congestion, but you must balance it with keeping warm and comfortable by avoiding drafts and maintaining a cool (not cold) room, ideally around 18°C (60-67°F), using blankets for warmth and maybe a humidifier if air is dry, to prevent worsening symptoms.
Keep your bedroom cool. You may want to open a window, turn on the air conditioner, or place a fan in your room to gently circulate cool air throughout the space. While you may want to wrap up and stay warm in bed while fighting a cold, the warmth may actually disrupt your sleeping pattern.
Sleeping when you have a cold can be difficult because symptoms tend to get worse at night. One reason symptoms are worse is because gravity can no longer help drain your sinuses. To get better sleep with a cold, try sleeping with your head raised, and make sure you're addressing your cold symptoms.
Unless you are planning on literally freezing your place, cold will not get rid of bacterial sickness or viral. It will be more taxing on the immune system, so if you just don't like your flatmate then go for it. But if you want someone to get better, a warm environment is better.
The importance of fresh air when ill
Not only does it ensure that the bacteria are removed, but fresh air is conducive to faster recovery. What we actually need – especially in the winter when we lock ourselves in our homes – is constant ventilation. Just opening a window for 15 minutes doesn't really do any good.
You can't cure a cold, but the fastest way to feel better is through rest, fluids, and symptom relief using things like warm liquids (honey/lemon), saline nasal sprays, and humidifiers, while avoiding dehydrating drinks and smoking to help your body fight the virus efficiently. Prioritizing sleep and good nutrition supports your immune system, and over-the-counter pain relievers can manage fever or aches, though remember antibiotics don't work on viruses.
Open the window fully, let the fresh air circulate, then close it before going to sleep. This quickly renews the air while keeping the temperature at a comfortable level. You don't need to open it wide — a small gap is enough to ventilate the room throughout the night.
The 3-2-1 sleep rule is a simple wind-down routine: stop eating and drinking alcohol 3 hours before bed, stop working/mentally stimulating activities 2 hours before, and turn off screens (phones, TVs) 1 hour before sleep, helping you transition to rest by reducing stimulants and preparing your mind and body. It's often part of a larger 10-3-2-1-0 rule, which also adds no caffeine 10 hours prior and no hitting snooze (0) in the morning.
Studies show that people who don't get adequate sleep when fighting an infection take longer to recover and may develop more severe symptoms.
Avoid salty foods, alcohol, coffee and sugary drinks, which can be dehydrating. Ice chips are another simple way to stay hydrated and calm a scratchy throat. Gargle with salt water.
Choose immune-boosting nutrients
Levels of the hormone cortisol (which regulates the body's stress response) are typically elevated in the morning. This helps to suppress inflammation and reduce cold symptoms throughout the day. At night, however, the body experiences lower levels of cortisol, enabling cold and flu symptoms, including fever, to flare.
Between elevated temperatures and increased sweating, dehydration is something to avoid when you have a fever. Caffeine and alcohol can make your symptoms worse (especially stomach-related symptoms), so I'd recommend sipping on water and other clear liquids throughout the day to stay hydrated.
Recommendation. As possible, take steps for cleaner air. This can mean bringing in fresh outside air, purifying indoor air, or gathering outdoors. Virus particles do not build up in the air outdoors as much as they do indoors.
Key takeaways: Sinus congestion gets worse when you lie down because it's harder for mucus to drain when you're flat on your back. Sleep on your back or side with your head and shoulders elevated to help your sinuses drain. Use a nasal spray or neti pot before bed to help your sinuses drain overnight.
You need to give your immune system the best possible chance to fight the infection. If you are working hard and/or are stressed, then your immune system is more or less compromised (depending on how much physical or mental stress you are under). So yes, I would say some rest helps you recover.
Cold remedies that work
Sleeping More When You're Sick Is *Totally* Normal—And Evidence of Your Immune System in Action. The reason why being sick makes you tired (and why you sleep so much when you're sick) is because your immune system needs sleep to recover.
Although not fully proven, large doses of vitamin C may help reduce how long a cold lasts. Large doses of vitamin C do not protect against getting a cold. Vitamin C may also be helpful for those exposed to brief periods of severe or extreme physical activity.
On average, Japanese sleep about 7 hours and 20 minutes a night, - the least among 33 OECD member countries. And the number of insomniacs is growing. But even as more people suffer from insomnia, help can be hard to find.
The koala is the animal that sleeps approximately 90% of the day (20-22 hours), a necessity due to its low-energy eucalyptus diet requiring intensive digestion, making it the ultimate champion of sleep in the animal kingdom, followed closely by sloths and bats.
Sleeping with an open window can negatively impact your health as well. While cold air itself can't make you sick — colds and flus occur because germs overwhelm a person's immune system — it can potentially dry out nasal cavities, resulting in increased mucus production and a possible sinus infection.
What is the German bed method? The German Bed Method, also known as 'Doppelbett,' refers to opting for two single beds within a double bed frame, instead of sharing one double mattress.
"Lüften is a historic practice of opening your home's windows to allow fresh air in and force stale air out," says Lauren Riddei, Healthy Home Wellness Interior Designer and CEO of Haus Holistics.