Yawning is usually harmless, but it is possible to yawn too much. Excessive yawning can be caused by a few different disorders that require medical attention. The vagus nerve, which is the nerve connecting the throat and abdomen to the brain, can cause excessive yawning by interacting with the bloodRead More →
In addition, different regions of the brain control yawning and breathing. Still, low oxygen levels in the paraventricular nucleus (PVN) of the hypothalamus of the brain can induce yawning. Another hypothesis is that we yawn because we are tired or bored. What is the scientific reason for yawning? In humans,Read More →
Here’s the basic idea: When you start to yawn, powerful stretching of the jaw increases blood flow in the neck, face, and head. The deep intake of breath during a yawn forces downward flow of spinal fluid and blood from the brain. Cool air breathed into the mouth cools theseRead More →
A scientific study published Wednesday in the Royal Society journal examined the phenomenon, confirming that human yawning is contagious to dogs and expanding the body of research on the subject. The team examined prior data from six studies and a total of 257 dogs. Can cats catch yawns? Contagious yawningRead More →
In most frog species, it is the male sending out the call to mate. He inflates his vocal sacs on his throat, providing an effective chamber to amplify the sound of air rushing across his vocal chords. How do you get a frog to open its mouth? Wrap the paperRead More →