Tag contagious yawning

Health

Why Do We Yawn? The Science of Yawning Explained

Why do we yawn? The oxygen myth, the leading brain-cooling theory, why yawns are contagious, and why we even yawn before birth — the science explained simply.

Justin
July 25, 2026

Recent Posts

BabyLoveGrowth AI Review: Can It Actually Grow Your SEO?
BabyLoveGrowth AI review: an honest look at the AI SEO tool. How it automates content and keyword research, what it's good at, the limitations, and who it's for.
Apple 2026 MacBook Air Review: Is It Worth Buying?
Apple 2026 MacBook Air review: who it's really for, what's great, the trade-offs, and how to choose the right RAM and storage before you buy. An honest buyer's guide.
How Does the Electoral College Work? Explained Simply
How does the Electoral College work? The 538 votes, the 270 needed to win, why winner-take-all lets the popular-vote loser win, and the debate — explained neutrally.
Why Do Video Games Cost So Much to Make? Explained
Why do video games cost so much to make? Where hundreds of millions actually go — salaries, art, marketing — and why bigger budgets drive microtransactions.
How to Unclog a Drain Without Chemicals: A Step-by-Step Guide
How to unclog a drain without harsh chemicals. A safe, step-by-step guide from boiling water and plunging to snaking and cleaning the P-trap — plus what to avoid.
What Really Caused World War 1? The Real Reasons Explained
What caused World War 1? Beyond the assassination — the four long-term causes (MAIN), the alliance system, and the mobilisation timetables that made war unstoppable.
What Is an Index Fund? Passive Investing Explained Simply
What is an index fund and why do experts recommend them? How passive investing works, why matching the market usually beats picking stocks, and the trade-offs.