The Real Reason Humans Have Two Nostrils
If you take a deep breath right now, it feels like air is flowing evenly through both sides of your nose. But here’s a surprising fact: it almost certainly isn't.
At any given moment, about 80% of healthy humans are doing most of their breathing through just one nostril. A few hours later, without you noticing, your body quietly switches sides.
Why did evolution design us with two...