The Nose as a Performance System
Andrew Huberman, professor of neurobiology at Stanford University, often highlights that the nose is far more than a simple airway. Instead, it functions as a specialised system designed to optimise the air we breathe before it reaches the lungs.
When air passes through the nasal passages it is filtered, humidified, and regulated. This process prepares the air for more efficient exchange in the lungs and helps protect the respiratory system from irritation caused by cold or dry air.
The Role of Nitric Oxide
One of the key mechanisms Huberman frequently discusses is the production of Nitric Oxide in the nasal passages.
Nitric oxide plays an important role in the body’s ability to regulate blood flow. When released during nasal breathing, it helps expand blood vessels and support oxygen transport throughout the body.
This mechanism may contribute to more efficient oxygen uptake compared with habitual mouth breathing, particularly during sustained physical activity.
Breathing Rhythm and Performance
Huberman also notes that nasal breathing naturally encourages slower and more controlled breathing patterns. By promoting a steadier breathing rhythm, nasal breathing may help regulate respiratory effort during exercise.
For endurance athletes, maintaining controlled breathing patterns can support pacing, reduce airway irritation, and help sustain effort over longer durations of training or competition.
Breathing and Sleep Quality
Beyond athletic performance, Huberman frequently emphasises the relationship between breathing patterns and sleep quality. Maintaining clear nasal airflow during sleep supports more stable breathing rhythms throughout the night.
Consistent nasal breathing during sleep may help reduce disturbances linked with mouth breathing, supporting deeper and more restorative sleep cycles.
A Simple Habit with Broad Impact
Huberman’s work has helped bring wider attention to breathing mechanics within the fields of health, performance, and recovery. His research highlights that something as fundamental as breathing through the nose can influence oxygen efficiency, respiratory control, and overall physiological performance.