Tuesday April 23, 2019

Why do Our Eyes Water when We Yawn?

Did you know there are three different types of tears that our eyes shed?

0
//
why do our eyes water when we yawn
Teary-eyed after a yawn? We will tell you why! Pixabay

“Why do our eyes water when we yawn?” According to popular opinion, it is because you are tired and you miss your bed, which is why you begin to tear up. Don’t believe us? Well, you shouldn’t.

As much as that rationale seems right (on an emotional level), there is complete science behind the question ‘why do our eyes water when we yawn?’.
To understand this phenomenon, you will first need to understand tear-anatomy. Did you know there are three types of tears that your eyes shed?
1. Emotional Tears: Released upon experiencing intense emotions
2. Reflexive Tears: They serve to remove irritants and contaminants from the eyes like dust, dirt, etc.
3. Basal Tears: They are produced naturally throughout the day to lubricate the eyes.
 
But our question was :

Why do our eyes water when we yawn?

It is these basal tears that are responsible for the tears when you yawn.
Two components of the face are primarily responsible for our eyes to water when we yawn,
• Facial muscles
• Lacrimal glands
Lacrimal glands are glands that are placed beneath our upper eyelids just below the eyebrow bone.
They produce watery component to our eyes’ own natural tears throughout the day to keep the surface of our eyes coated and moisturized. Thus, our eyes remain moist throughout the day because of the functioning of lacrimal glands (This is also the reason why our eyes look glossy)
There are 43 muscles in the face itself that work together to help us emote. When we yawn, the facial muscles around our eyes begin to tighten.  This exerts pressure on the lacrimal glands and squeezes them a little.
In response, the lacrimal glands may release a little quantity of water which had been stored to release later.
Basal tears typically flow diagonally across the eyes and collect in a structure on the opposite corner of the eye called punctum.
But when we yawn, this water has no passage to get absorbed, and hence it falls out of the eyes, which is why it appears as if we are shedding tears.
Now if you shed a tear or two while yawning, don’t feel like it’s a ‘miss you’ call from your bed; it’s just a natural reaction to feeling tired.
And if the next time somebody asks you, ”why do our eyes water when we yawn?”, don’t shy away from sharing the knowledge!

Next Story

Common Myths Around Sleep Decoded!

"Sleep is important to health, and there needs to be greater effort to inform the public regarding this important public health issue"

0
sleep
The authors encourage patients not to dismiss loud snoring, but rather to see a doctor since this sleep behaviour may lead to heart stoppages or other illnesses. Pixabay

Common myths around sleep like snoring is harmless or having a drink helps fall asleep not only shape poor habits but may also pose a significant public health threat, say researchers.

The claim by some people that they can get by on five hours of sleep was among the top myths researchers were able to dispel based on scientific evidence.

This myth also poses the most serious risk to health from long-term sleep deficits, said the study published online in Sleep Health journal on Tuesday.

“Sleep is a vital part of life that affects our productivity, mood, and general health and well-being,” said study lead investigator Rebecca Robbins at New York University Langone Health.

sleep
This myth also poses the most serious risk to health from long-term sleep deficits, said the study published online in Sleep Health journal on Tuesday. Pixabay

“Dispelling myths about sleep promotes healthier sleep habits which, in turn, promote overall better health,” she added.

To reach this conclusion, researchers reviewed more than 8,000 websites to identify the 20 most common assumptions about sleep.

With a team of sleep medicine experts, they ranked them based on whether each could be dispelled as a myth or supported by scientific evidence, and on the harm that the myth could cause.

Another common myth relates to snoring.

While snoring can be harmless, it can also be a sign of sleep apnea, a potentially serious sleep disorder.

The authors encourage patients not to dismiss loud snoring, but rather to see a doctor since this sleep behaviour may lead to heart stoppages or other illnesses.

time
The claim by some people that they can get by on five hours of sleep was among the top myths researchers were able to dispel based on scientific evidence. Pixabay

The study authors also found sufficient evidence that, despite beliefs to the contrary, drinking alcoholic beverages before bed is indeed unhealthy for sleep.

Also Read: Mexican President will Create ‘Robin Hood’ Institute to Return ‘Stolen’ Wealth to People

“Sleep is important to health, and there needs to be greater effort to inform the public regarding this important public health issue,” noted study senior investigator Girardin Jean Louis.

Robbins and her colleagues suggest creating a consistent sleep schedule and spending more time, at least seven hours, asleep. (IANS)