How can I check if my nose is actually blocked?

A simple way to assess nasal airflow is using the “Knife Test,” where you observe condensation patterns on a cool metal surface while exhaling through your nose.

This can give you a rough idea of whether both nostrils are equally open or if one side has reduced airflow. While not a diagnostic test, it can help you become more aware of nasal breathing patterns.

If you notice consistent restriction, it may be related to congestion, allergies, structural differences, or habitual mouth breathing.

Improving nasal breathing can have a positive impact on sleep, energy, and overall breathing efficiency.

👉 Learn more about the Knife Test and nasal patency