heat-induced panting ventilates upper airways without disrupting blood pH balance
Panting (thermal tachypnea) increases ventilation of the upper airways but has minimal effects on alveolar ventilation and thus rarely results in respiratory alkalosis, in contrast to thermal hyperpnea which increases tidal volume.
What this means for you
When your body heats up, it naturally increases breathing rate to release heat — but this response stays in the upper airways and doesn't throw off the delicate acid-base balance in your blood. That means your body can cool itself efficiently during a heat session without triggering the lightheadedness or tingling that comes from over-breathing.
The published research
The Impact of Inflammation on Thermal Hyperpnea: Relevance for Heat Stress and Febrile Seizures
American Journal of Respiratory Cell and Molecular Biology · 2024
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