Oxygen Levels Lower At Night: What You Need To Know

How to get more oxygen into my lungs when sleeping at night Quora


Have you ever woken up feeling groggy and tired, even after a full night’s sleep? You might not realize it, but the reason for your fatigue could be due to lower oxygen levels at night. In this article, we’ll explore the science behind this phenomenon and provide tips on how to improve your sleep quality.

Why Do Oxygen Levels Decrease at Night?

During the day, our bodies take in oxygen and expel carbon dioxide through the process of breathing. However, at night, our breathing patterns change. We tend to breathe slower and shallower, which can cause a decrease in oxygen levels in the blood. Additionally, if you suffer from sleep apnea or other breathing disorders, your oxygen levels can drop even further.

The Effects of Low Oxygen Levels

Low oxygen levels can have a negative impact on your health. It can cause fatigue, headaches, and difficulty concentrating. In severe cases, it can lead to heart problems, high blood pressure, and even stroke. That’s why it’s essential to take steps to improve your oxygen levels while you sleep.

Tips for Improving Oxygen Levels at Night

1. Change Your Sleeping Position

One way to improve your oxygen levels is to change your sleeping position. Sleeping on your back can cause your tongue and throat muscles to relax, which can block your airway. Try sleeping on your side instead to keep your airway open.

2. Exercise Regularly

Regular exercise can improve your lung function and help you breathe more efficiently. Aim for at least 30 minutes of moderate exercise per day, such as brisk walking or cycling.

3. Avoid Alcohol and Sedatives

Alcohol and sedatives can relax your muscles, including those in your throat and tongue. This can cause your airway to become blocked, leading to lower oxygen levels. Try to avoid these substances before bedtime.

4. Use a Humidifier

Dry air can irritate your airways and cause inflammation, which can lead to lower oxygen levels. Using a humidifier in your bedroom can help keep the air moist and reduce inflammation.

5. Get Tested for Sleep Apnea

If you suspect you have sleep apnea or another breathing disorder, talk to your doctor about getting tested. Treatment for sleep apnea can improve your oxygen levels and overall sleep quality.


Lower oxygen levels at night can have a significant impact on your health and well-being. By following these tips, you can improve your oxygen levels and get a better night’s sleep. Remember to talk to your doctor if you have any concerns about your breathing or sleep quality.