Let’s get the basics out of the way—without the boring jargon. The air around you is mostly nitrogen, about 78% of it. Think of nitrogen as the quiet friend at a party: it’s everywhere, but it doesn’t do much except take up space.
The real star of the show is oxygen, which makes up just 21% of the mix. That’s the fuel that fires up every cell in your body, turning your lunch into energy for a dance party or a power nap.
And then there’s that tiny leftover 1%, which includes argon, carbon dioxide, and a pinch of neon, helium, and methane. Yes, you’re literally breathing in a little bit of balloon gas and fart gas—which is oddly hilarious when you think about it.
