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- There are several reasons why we yawn12:
- The body wants to wake itself up. The motion helps stretch the lungs and their tissues, and it allows the body to flex its muscles and joints. It may also force blood toward your face and brain to increase alertness.
- Yawning can be a function of breathing and it is more likely to happen when the blood needs oxygen. A yawn causes a faster heartbeat and a big intake of air which means that it is pumping and more blood and oxygen into the body. Yawning is responsible for clearing toxins out of the blood and providing a fresh supply of oxygen.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Another reason you may yawn is because the body wants to wake itself up. The motion helps stretch the lungs and their tissues, and it allows the body to flex its muscles and joints. It may also force blood toward your face and brain to increase alertness.
www.healthline.com/health/why-do-we-yawnYawning can be a function of breathing and it is more likely to happen when the blood needs oxygen. A yawn causes a faster heartbeat and a big intake of air which means that it is pumping and more blood and oxygen into the body. Yawning is responsible for clearing toxins out of the blood and providing a fresh supply of oxygen.
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A yawn is a reflex in vertebrate animals characterized by a long inspiratory phase with gradual mouth gaping, followed by a brief climax (or acme) with muscle stretching, and a rapid expiratory phase with muscle relaxation, which typically lasts a few seconds. For fish and birds, this is described as gradual mouth gaping, staying open for at least 3 seconds and subsequently a rapid closure …
Wikipedia · Text under CC-BY-SA license- Estimated Reading Time: 8 mins
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