Stale Air Syndrome: The Invisible Impact of Indoor CO2 Levels on Cognitive Decline and Chronic Fatigue

You sit in a crowded meeting room or an energy-efficient office for an hour, and an undeniable brain fog begins to set in. You blame it on the boring topic, a lack of coffee, or a poor night's sleep. In reality, you are likely suffering from mild asphyxiation. The silent killer of productivity isn't a lack of motivation—it is the hidden accumulation of carbon dioxide in modern, sealed buildings.

How does a gas we exhale normally become a cognitive poison? Human evolution never prepared us fo...