One of the most bothersome things about being sick or having seasonal allergies is that it makes your nose stuffy and blocked. This makes breathing in through your nostrils frustrating – if not altogether impossible.

But even when you aren’t sick, perhaps you’ve noticed that when you take a deep breath, only one of your nostrils seems to be allowing the air in. Before you panic and wonder if you’re coming down with something, what you’re experiencing is actually a normal bodily process.

Multiple times a day, without us even noticing, the nostrils naturally switch between a dominant nostril for airflow. This process is called the nasal cycle and it plays an important role in the health of our nose.

The body actually switches the dominant nostril as frequently as every two hours while we’re awake. This switch is less frequent when we’re sleeping as our breathing rate slows and the volume of air entering and leaving the body lowers.

There are two key aspects to the nasal cycle: congestion and decongestion.

During the congestion phase, one nostril will experience reduced airflow, while the opposite nostril will be open, or decongested – allowing for more air to pass through it. The decongested phase actually fatigues the open nostril, as air dries it out and brings........

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