Interesting Facts About Yawning: What Are The Causes?

Yawning also referred to as oscitation, is a bodily activity which occurs in many vertebrates. It can be a common sign of boredom, or just an attempt by the body to regulate itself.
In human beings, yawning is usually triggered by others yawning (e.g. seeing another person yawning, chatting with someone on the phone who’s yawning) and is a typical example of positive feedback.
Many parts of your body are in action when you are yawning. First, your mouth opens, and your jaw drops. This allows you to breathe in as much air as possible. When you inhale, the air taken in fills your lungs. Your abdominal muscles contract and your diaphragm is pushed down. The air inhaled expands the lungs to capacity, and then some amount of the air is forced out.
But, according to the 2012 study, yawns are most likely to be shared between two individuals who’re close to each other. Therefore, if you are wondering if your crush likes you, then try yawning in front of him or her and gauge the reaction!
Yawning shares several social aspects as laughter; we have all found ourselves laughing at something which was not particularly funny simply because others are doing it. Yes -yawning is a primitive form of peer pressure! Yawning has remained a great mystery. No one is very sure why we yawn. Though, several scientists have their beliefs regarding the cause of yawning.
So, what’s this yawning and why does the mentioning of this word make us yawn? What do our scientists have to say about this strange phenomenon? Let’s try to unlock the mystery behind this involuntary activity and figure out possible answers to these questions through our list of top 10 interesting facts about yawning:
1. Yawns can last for about six seconds, and on average, males yawn longer than females. During that six seconds, the heart rate can rise by as much as thirty percent.
2. Most of us are aware that yawning is contagious in both humans and some other primates. However, yawns can be contagious between humans and their dogs as well. Actually, even hearing their owner yawn may make a dog to yawn. Since yawning is tied to social interaction, and empathy it underscores the close connection we’ve with this long-domesticated species.
3. You can’t suppress a yawn with the clenched teeth. Go ahead and test it. When you feel an urge to yawn, try to inhale normally while keeping your teeth locked down. It feels extremely horrible. Part of the yawning mechanism is the opening of your jaws.
4. Yawning cools your brain. Researchers at the University of Albany have discovered that when a person breathe through his or her nose, it cools the blood vessels and by extension the brain. The same study revealed that we yawn more in winter, when the air you inhale is colder, and therefore boosts the cooling of your brain more than in summer.
5. At what stage does a human start yawning? Younger than you might think! Studies have revealed that even 11-week-old fetuses yawn as part of the brain development. Nonetheless, contagious yawning -as in yawning at the sound, sight or even suggestion of a yawn –does not occur until we’re about one or two years old.
6. Reading or thinking about yawning will make you do it. You’ll be yawning in the next few minutes or so…if not now!
7. Yawning is an involuntary activity which can help athletes prepare for a competition -you can ask Apolo Ohno, a speed skater who’s notorious for his popular pre-contest yawning ritual. Since yawning cools the brain (especially the frontal lobes), an athlete will be able to boost his concentration and attention period before the race.
8. Yawning usually occurs when an individual is bored, as shown by a 1986 study of the college students who yawned more during a lackadaisical color video rather than the hard-hitting, head-banging rock music videos.
9. Although yawning is a normal body activity, excessive yawning might mean that you’re suffering from an underlying illness. Excessive yawning is one of the ‘uncommon’ symptoms of the heart conditions, as it is a result of the vagus nerve reaction. In addition, too much yawning might signify brain illnesses.
10. A healthy person yawns about ten times per hour. It can occur as you wake up in the morning or late in the evening. On average, a person yawns approximately 240,000 times during your entire lifetime.

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