Sleep and Immunity: How Getting Enough Rest Can Boost Your Body’s Defenses

Zepp Aura
4 min readMar 31, 2023

Sleep is a vital part of our daily routine, and getting enough of it is crucial for our physical and mental health. Not only does it help us feel more alert and energized, but it also plays a significant role in boosting our body’s immune system and reducing the negative effects of stress.

Here are some ways that sleep can help boost your immune system:

  1. Increases the production of cytokines: Cytokines are proteins that help regulate the immune system’s response to infection and inflammation. Getting enough sleep has been shown to increase the production of these proteins, helping the body mount a stronger defense against illness.
  2. Promotes the production of T cells: T cells are a type of white blood cell that plays a critical role in the immune system’s response to infection. Research has shown that getting enough sleep can help increase the production of T cells, making the body more effective at fighting off infection.
  3. Reduces inflammation: Lack of sleep has been shown to increase levels of inflammatory markers in the body, while getting enough sleep can help reduce inflammation and promote better overall health.

In addition to directly promoting better immune function, getting enough sleep can also help reduce the negative effects of stress on the body. Stress is known to weaken the body’s defenses against infection, making us more susceptible to illness and disease.

Stress inhibits our immune system in 2 major ways: cortisol and inflammation. When we experience stress, our body releases cortisol. While cortisol helps us deal with stress, prolonged exposure to cortisol can suppress the immune system and reduce its ability to fight off infections.

Chronic stress can also cause low-grade inflammation in the body, which can weaken the immune system over time. This can lead to a variety of health problems, including autoimmune disorders, allergies, and other inflammatory diseases.

Here are some tips for getting better sleep that can lead to reduced stress levels:

  1. Stick to a consistent sleep schedule: Try to go to bed and wake up at the same time every day, even on weekends.
  2. Create a relaxing sleep environment: Make sure your bedroom is quiet, dark, and cool, and invest in a comfortable mattress and pillows.
  3. Limit your exposure to screens: Blue light emitted by electronic devices can interfere with your ability to fall asleep. Try to avoid using electronic devices in the bedroom.
  4. Avoid caffeine and alcohol: These substances can interfere with sleep quality and contribute to feelings of stress and anxiety.
  5. Practice relaxation techniques: Before bed, try practicing deep breathing exercises, meditation, or yoga to help calm your mind and body.

If you own a smart wearable device, you can also use it to improve your sleep quality. Here are some tips:

  1. Use sleep tracking features: Many smart wearable devices come with built-in sleep tracking features that can provide insight into your sleep patterns.
  2. Set sleep goals: Some smart wearable devices allow you to set sleep goals, such as the number of hours of sleep you want to get each night.
  3. Wear your device to bed: To get the most accurate sleep tracking data, make sure to wear your smart wearable device to bed.
  4. Use smart alarms: Many smart wearable devices come with smart alarm features that use vibration or gentle sounds to wake you up during a light stage of sleep.
  5. Analyze your data: Take some time to review the sleep tracking data from your device on a regular basis.

In conclusion, getting enough sleep is crucial for promoting better overall health and boosting the immune system’s ability to fight off infection. By prioritizing sleep and taking steps to reduce stress and promote relaxation, you can help keep your body’s defenses strong and improve your quality of life. So, make sure to get enough rest and give your body the support it needs to stay healthy and strong.



Zepp Aura

Zepp Aura, Zepp Health’s rest and mindfulness solutions service, helps users sleep and rest better with AI-powered personalized sleep melodies.