Stomachs growl, noses run, and yawning is contagious: Ever wonder why?
Why do you yawn?
Perhaps you associate yawning only with being tired or bored. While we don’t know exactly why people yawn, there’s no shortage of theories. Yawning may
- stretch out our lungs and nearby tissues, preventing tiny airways in the lungs from collapsing
- distribute a chemical called surfactant, a gooey liquid that coats the tiny air pockets in the lungs and helps keep them open
- help prepare our bodies for transitions between wakefulness and rest: For example, yawning often occurs after a period of relaxation and when awakening from sleep. And it may serve as an internal signal that it’s time to sleep, or time to take a break from activities (such as driving).
- play a role in maintaining proper brain temperature: Our brain functions best within a narrow range of temperatures. Some experts believe yawning can help cool the brain through complex effects on nearby circulation and the sinuses.
It’s also unclear why yawning is contagious. In the animal kingdom. It’s common to see contagious yawning among members of a group, perhaps as a signal for collective behavior (such as moving from activity to rest).
Why does your stomach growl?
That rumbling in your stomach is known คาสิโนออนไลน์ UFABET ฝากถอนรวดเร็ว เริ่มต้นเล่นง่าย medically as borborygmi an excellent Scrabble word if you have the right letters. We usually assume it reflects hunger. And it’s true that the experience of hunger can make itself heard in anticipation of a meal.
But your stomach may also growl after a meal. When the stomach and intestines propel liquids and food through the digestive tract. Stress can also trigger stomach rumbling.
What’s causing all that noise and is it ever a problem? It may be due to gas moving around in response to muscular contractions of the intestinal walls. Occasionally, noises from the abdomen may be a sign of an intestinal infection or other trouble. If you’re experiencing other symptoms, such as pain or fever, check in