Why do tears come out while yawning when we are really tired?
When we open our mouths to yawn, the muscles around our eyes put pressure on our tear ducts; when the yawn is particularly wide, the pressure is great enough that our facial muscles literally 'squeeze' tears out of the ducts.
The Short Answer
When we open our mouths to yawn, the muscles around our eyes put pressure on our tear ducts; when the yawn is particularly wide, the pressure is great enough that our facial muscles literally 'squeeze' tears out of the ducts.
Analysis
Key Concepts: Yawn, muscles, pressure
This explanation focuses on yawn, muscles, pressure and spans 40 words across 1 sentences. At 42% below the average Human Body explanation (69 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.
What This Answer Covers
This is a focused, single-point answer that gets directly to the core of the question without detours.
How This Compares in Human Body
Ranked #359 of 500 Human Body questions by answer depth (top 73%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.
Frequently Asked Questions
Is there a simple explanation for why tears come out while yawning when we are really tired?
When we open our mouths to yawn, the muscles around our eyes put pressure on our tear ducts; when the yawn is particularly wide, the pressure is great enough that our facial muscles literally 'squeeze' tears out of the ducts.
How detailed is this explanation compared to similar Human Body questions?
This is a focused answer at 40 words, ranked #359 of 500 Human Body questions by depth. The key concepts covered are yawn, muscles, pressure.
What approach does this answer take to explain tears come out while yawning when we are really tired?
The explanation uses direct explanation across 40 words. It is categorized under Human Body and addresses the question through 1 analytical lens.