Why Do You Get Stuffy In Just One Nostril?

Why Do You Get Stuffy In Just One Nostril?

Have you ever noticed that when you're sick, your nose is rarely stuffy in both nostrils? One nostril seems to stay clear most of the time. There's a reason for this, and it sheds light on the way the nose works normally. Hear all about it in the video below.

Why Does Your Nose Get Stuffy One Nostril At A Time?

Learn about the "nasal cycle."

You Only Breathe Out Of One Nostril At A Time

Find out why.

02:53

Key Facts In This Video

  • 1

    About 85% of humans breathe primarily out of one nostril at a time. (0:16)

  • 2

    One 1988 study showed that breathing through the right nostril raises blood glucose levels. (1:07)

  • 3

    When you sleep on your side, the nostril closest to the bed will swell, and you'll breathe out of the other one. (2:00)

Why Does Your Nose Run When You Cry?

Not all of your tears roll down your cheeks.

01:09

from The Science Majors Science Channel

Key Facts In This Video

  • 1

    When you cry, most tears swell over your eyelids, but some go back into your tear duct and down your nasal cavity. (0:09)

  • 2

    The lacrimal gland is what produces most of your tears. (0:27)

  • 3

    The lacrimal sac is where your eyelids are attached to the sides of your nose. (0:43)

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