WHY DO WE YAWN — AND WHY IS IT SO CONTAGIOUS?
Yawning is one of the most common human behaviors, yet one of the most misunderstood. You yawn when you’re tired, bored, stressed, or even when someone else yawns nearby. Sometimes, just reading about yawning triggers one. So why do we yawn? And why is yawning so strangely contagious? Science has some fascinating answers. What Is a Yawn? A yawn is an involuntary reflex involving, A deep inhalation, Stretching of the jaw and facial muscles. A slow exhalation. Yawning occurs in humans, animals, and even unborn babies, suggesting it serves an important biological function. ALSO READ: https://stephenpriscilla.blogspot.com/2025/12/10-morning-habits-for-productive-day.html Why Do We Yawn? The Main Theories Despite how common yawning is, scientists are still uncovering its exact purpose. Here are the most widely accepted explanations. 1. Yawning Helps Cool the Brain One of the strongest scientific theories is brain temperature regulation. How it works: Yawning increase...