Sleep is an essential part of recovery when you're feeling unwell. It's your body's way of telling you to slow down and rest, so you can get healthy. While the exact reasons behind why we tend to sleep more when sick aren't fully understood, research suggests that it is evolutionarily conserved across species to rest when the body is stressed.
Sleeping gives the immune system an opportunity to function at its best. When you're asleep, your body releases proteins called cytokines, which communicate with cells in the immune system to help fight off illness.
If you feel a cold coming on, it's a good idea to sleep all day if you can. This gives your body the upper hand, and you'll likely feel better the next day.
What You'll Learn
Sleep is medicine for the immune system
Sleep is like medicine for the immune system. When you fall sick, your body may be telling you to slow down and rest, so you can get healthy. This feeling of tiredness and sluggishness is an adaptation called "sickness behaviour", which forces you to slow down.
Research has shown that sleep is essential for boosting the immune system and helping the body recover. Sleep gives your body time to repair itself, which is especially important when you are sick and low on energy. Sleep is one of the main regulators of our immune system and when we don't get enough of it, it becomes harder to recover from illnesses.
During sleep, the body releases proteins called cytokines, which communicate with cells in the immune system to help fight off illness. Cytokines also help promote sleep. Giving in to feelings of fatigue helps the body make more cytokines and fast-track recovery.
Sleep also impacts the cells the body uses to fight off viruses, which could influence how well you recover from sickness. A 2019 study suggested that sleep helps T cells (a type of white blood cell) to more easily stick to infected cells and destroy them.
Additionally, sleep has been linked to the body's fever response. Sleep helps the body break a fever, and the body has a better fever response while sleeping, which is another way it fights infection.
When you are sick, it is recommended to get more than nine hours of sleep per night. Taking naps throughout the day can also help boost overall sleep. However, it is still important to aim for a long continuous stretch of sleep at night, as this is when you will hit all the stages of your sleep cycle, including restorative slow-wave sleep.
To help improve sleep when sick, it is recommended to avoid screens at night, use a humidifier, and stay hydrated.
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Sleep helps your body heal
There are immune processes that take place while you sleep, which can bolster your body's ability to fight off illness. Fighting an illness takes a lot of energy, which can make you feel tired and lacking in energy. So, when you're sick, you may need more sleep than usual.
During sleep, your body releases proteins called cytokines, which communicate with cells in the immune system to help knock out pathogens. Cytokines also help promote sleep. Giving in to feelings of fatigue helps the body make more cytokines and fast-track your recovery.
Sleep also impacts the cells your body uses to fight off viruses. Research suggests that sleep helps T cells (a type of white blood cell) stick to infected cells and destroy them. Additionally, slow-wave sleep and the circadian rhythm induce hormonal changes that help send T cells to the lymph nodes and stimulate an immune response against pathogens.
Getting enough sleep when you're sick is like giving your body medicine. It helps your immune system bounce back and aids in your recovery. So, if you're feeling under the weather, don't hesitate to get some extra rest. It will help your body heal and get you back on your feet faster.
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Sleep is important for recovery from illness
There are immune processes that occur while you sleep, which can help your body fight off illness. Cytokines, a type of protein in your immune system that targets infections, are produced and released during sleep. This means that sleep helps jump-start your immune response to your illness.
Your body also has a better fever response while you're sleeping. Fevers are metabolically demanding, so getting enough sleep is important for managing the extra energy required. Sleep is also important for responding to cellular stress, repairing damaged tissues, and regulating immune cell proliferation and trafficking.
The amount of sleep that people need varies depending on age, activity level, health status, and other factors. However, when you're sick, it's beneficial to sleep longer than usual. The American Academy of Sleep Medicine and Sleep Research Society recommend that people with illnesses aim for more than nine hours of sleep per night.
If you're feeling sick, don't worry about sleeping all day. Your body needs the rest, and as long as you wake up to drink water and eat nourishing food, letting yourself sleep is a great way to support your recovery.
To help you get a good night's sleep when you're sick, try the following:
- Sleep with your head propped up to help your nasal passages drain and reduce pressure in your head.
- Avoid cold medications that may keep you awake, and opt for a cold medicine made for nighttime instead.
- Take a hot shower or bath before bed to relax and break up mucus.
- Use a humidifier in your bedroom to prevent stuffy, congested airways.
- Avoid screens before bed, as the artificial light can disrupt your sleep.
- Stay hydrated, as sickness can make you more susceptible to dehydration.
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Sleep can prevent you from infecting others
When you're feeling under the weather, it's normal to feel tired and lethargic. Sleeping is essential when you're sick as it is your body's way of telling you to slow down and rest so you can get healthy.
Firstly, sleep gives your body time to repair itself, which you need when you're sick. When you get sleepy, it forces you to slow down and give your body the time it needs to heal. Secondly, there are certain immune processes that take place while you sleep that can bolster your body's ability to fight off an illness.
Additionally, fighting an illness takes a lot of energy, which can make you feel tired and lacking in energy. When you're awake, your body needs to direct energy to activities like thinking or moving around. If you're sleeping, your body can redirect that energy to your immune system so you can get better as soon as possible.
Being tired also means that you're less likely to go out and infect others while you're sick. A lack of energy can also help keep you safe. Because your immune system is busy fighting the infection you have, it doesn't fight as well against any new potential illnesses. So, feeling tired can prevent you from going out and exposing yourself to other germs and diseases.
Research has shown that a lack of sleep can make you more susceptible to getting sick. Therefore, staying inside and getting extra sleep has an even stronger positive effect on your health and can prevent you from infecting others.
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Sleep helps fight off illness
When you're awake, your body needs to direct energy to activities like thinking and moving around. When you sleep, that energy can be redirected to your immune system, helping you to recover faster. Sleep is like medicine for the immune system.
During sleep, your body releases proteins called cytokines, which communicate with cells in the immune system to help fight off illness. Cytokines also help promote sleep, so giving in to feelings of fatigue helps your body make more cytokines and fast-track your recovery.
Additionally, sleep impacts the cells your body uses to fight off viruses. Research suggests that sleep helps T cells (a type of white blood cell) stick to infected cells and destroy them. Slow-wave sleep and the circadian rhythm also induce hormonal changes that help send T cells to the lymph nodes and stimulate an immune response against pathogens.
Getting enough sleep when you're sick is crucial for your body's recovery. While there's no set amount, aiming for more than nine hours is a good idea. Napping throughout the day can boost your overall sleep, but it's best to still aim for a continuous stretch of sleep at night, as this is when you'll experience all the stages of your sleep cycle, including the restorative slow-wave sleep.
If you feel a cold coming on, it's best to sleep all day if you can. This gives your body the upper hand, helping you feel better the next day and reducing the number of sick days you'll need.
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Frequently asked questions
Yes, you should sleep as much as possible when you're sick. Sleep helps your body recover from illness by boosting your immune system. Aim for more than nine hours of sleep per night when you're unwell.
Sleep helps your body recover from illness in several ways. Firstly, it gives your body time to repair itself. Secondly, your body produces and releases cytokines during sleep, which are proteins that help to fight off infections. Finally, your body has a better fever response while you're sleeping, which is another way it fights infection.
There is no set amount of sleep that you should get when you're sick, but most adults should aim for more than nine hours of sleep per night. In addition to getting enough sleep at night, you can also take naps throughout the day to boost your overall amount of sleep.
Here are some tips to help you get more sleep when you're sick:
- Avoid screens at night
- Use a humidifier
- Stay hydrated
- Sleep with your head propped up
- Take a hot shower or bath before bed
- Drink a soothing, caffeine-free beverage before bed