Doing This One Simple Act Will Instantly Refresh Your Brain and Improve Your Focus

Source: Awakening from Alzheimer's

If you start to feel sluggish and your concentration wavers, your body has a rapid, easy method to make the brain more alert.

And you don’t even have to get out of your chair to use it.

All you have to do is yawn.

Research into what happens when you yawn shows that the simple motion of opening your mouth wide and letting in extra air produces a range of benefits that help the brain regain its focus. . .

Cool Down to Make Your Thinking Heat Up

Although most of us associate yawning with getting sleepy, researchers now believe it’s a way for the body and mind to fend off sleep and stay alert.

They’ve found that brain temperature fluctuates constantly. Yawning is a tool that balances brain temperature and helps maintain the brain’s thermal homeostasis – neither too hot nor too cool.

A slight elevation in the temperature of brain tissue can dull your senses. So when drowsiness or boredom clouds thinking, the researchers note, “the mind has to make an effort to maintain contact with the external environment.”1A central part of that effort is the yawn.

And studies of what happens in the human body during and after a yawn support the idea that a yawn arouses the brain.

Physiological Changes Take Place

For instance, as you yawn, your heart rate increases and stays higher after the yawn is finished. Plus, your skin conductance improves – the skin momentarily becomes a better conductor of electricity, which is known to be a sign of arousal. (The caffeine in a cup of coffee also increases skin conductance.)2

Besides that, yawning boosts alpha waves in the brain in a way similar to caffeine. Alpha waves have been linked to increases in creativity and better mood.3

And there’s more: The mechanical action of yawning puts the squeeze on structures in the neck called the carotid bodies. These release a variety of hormones including adenosine and catecholamines which, after a yawn, are believed to regulate the arousal of the brain. This action can also increase blood flow to brain cells.4

Wake-Up Call for the Brain

This kind of evidence leads researchers to believe that yawns represent a type of wake-up call to the brain. When you’re bored and getting distracted because something isn’t keeping your attention – lulled by a boring movie, lecture, or a long uninteresting stretch of highway – a yawn helps revive your mental focus.5

One interesting study looked at how various species yawn, and found that animals with larger brains containing more complex neural circuitry experience longer yawns than those with simpler nervous systems.6


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