There are gestures that we learn to hide. Yawn, for example. Too often associated with boredom or carelessness, it becomes embarrassing, almost shameful, especially in society.
So you hold him back. Out of politeness, out of reflex. But behind this little blockage hides a real problem: this reflex that you are stifling is not trivial. He has a very specific role… that you sabotage without knowing it.
Why it’s bad to hold in your yawn
There are actions we make without thinking much about them. Yawn, for example. A bout of fatigue, a room too hot, a meeting too long… and presto, it’s gone. But in certain contexts – at work, in front of someone, or simply out of habit – you swallow the yawn. And you tell yourself that it’s nothing.
Except that, in fact, it’s not nothing. Behind this little reflex lies an essential mechanism for your body. By blocking it, you deprive it of a natural process that fulfills several vital functions. And your body doesn’t really appreciate that.
Yawning isn’t just fatigue: it’s a useful physiological reflex
Yawning is not a human quirk: it is shared by many mammals. And its role is much more important than it seems. When you yawn, you open your mouth wide, take a deep breath, stretch your face and engage a whole series of muscles.
This process activates better oxygenation of the brain. Yawning also helps regulate body temperature. When you’re stressed, overloaded or losing control, it acts like a valve, a little physiological reset. It’s your body trying to find a certain balance.
And if you retain this reflex, you cut short these beneficial effects. Result: your brain remains in the dark, you fight for longer against drowsiness or reduced alertness. Worse, it can disrupt your breathing.
What you risk concretely with each retained yawn
It’s not just a temporary discomfort. By repressing this movement, you risk causing involuntary muscle tension, particularly in the jaw or neck. Some people even experience pain after blocking a yawn that is too strong.
You may also develop headaches or accentuate existing disorders such as bruxism (unconsciously clenching or grinding your teeth). Dentists confirm it: holding back a yawn sometimes puts a strain on the temporomandibular joint. It is fragile, and repeated improper use can lead to chronic pain.
And then there is breathing. Yawning triggers a deep inhalation followed by an exhalation. By preventing it, you block this deep respiratory cycle, which can promote mild hyperventilation or disrupt your cardio-respiratory rhythm.
A domino effect on your stress and your attention
Holding back a yawn also sends a control signal to your body. But not necessarily a good one. You’re asking your brain to block a useful reflex to allow it to readjust. This mental tension can increase your stress, especially if you are already in cognitive overload.
Result ? Less clarity, more distraction, and accumulating mental fatigue. Conversely, letting your body yawn naturally gives it a micro-break, an opportunity to breathe. And if you’re in the middle of a meeting or driving, it can be the difference between staying focused… or losing focus.
Even your mood can take a hit. Researchers have observed that yawning promotes a state of relaxation and calm. By blocking this process, you prolong your state of alert, which can worsen irritability.
Should you always yawn freely? Not necessarily, but…
Of course, you don’t have to force yourself to yawn all the time, nor do you have to do it openly in public. It’s not about turning every long meeting into a yawn festival. But if you feel a yawn coming, try not to hold it in abruptly.
You can accompany him discreetly, by relaxing your jaw, breathing a little more deeply. It is especially the tension, the closing reflex, which poses a problem. Your body is trying to tell you something: listen to it.
And the next time someone looks at you askance for yawning, remember this: you’ve probably just done some good for your brain, your breathing… and your day.
FAQ – Holding back a yawn: the questions you ask yourself
1. Is it dangerous to hold in a yawn too often?
Yes, by blocking this natural reflex, you can cause muscular tension in the jaw, neck, or even headaches. It can also disrupt your breathing or increase your stress.
2. Why do we yawn even when we are not tired?
Yawning isn’t just related to fatigue. It also intervenes to regulate brain temperature, promote vigilance or even relieve excess stress.
3. Are there techniques for discreetly yawning in public?
Yes. You can relax your jaw slightly, inhale deeply through your nose and yawn without opening your mouth wide. This allows you not to block the reflex without attracting attention.
4. Is yawning really contagious?
Yes, this is a well-documented phenomenon. Seeing someone yawn or even reading the word “yawn” is sometimes enough to trigger the reflex, linked to empathy and the functioning of mirror neurons.
5. Can you train your body to yawn less in public?
Not really. Yawning is an autonomic reflex. But by learning to better manage your stress, your breathing and your attention level, you can reduce the times when your body feels the need to yawn.
Photo credit: @shutterstock
