
The idea that it takes fewer muscles to smile than to frown is a popular one, but is it true? Various sources give different numbers of muscles required for each expression, with some saying it takes 43 muscles to frown and 17 to smile, while others claim it's 62 to frown and 26 to smile. Some even suggest it takes more muscles to smile. The truth is that people smile and frown differently, and not everyone has the same number of facial muscles. A true smile that involves the eye muscles might use more muscles than a frown, while a slight upturn of the mouth could be achieved with just one or two muscle pairs.
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What You'll Learn

The number of muscles used in smiling varies from person to person
It is a common belief that it takes fewer muscles to smile than to frown. However, the number of muscles used in a smile varies depending on the person and the type of smile they produce.
A smile that only raises the corners of the lips and the upper lip uses five muscle pairs or 10 muscles. In contrast, a frown that merely lowers the corners of the mouth with a slight downward pouting of the lower lip uses three muscle pairs or six muscles.
However, a "true" smile, which involves the eye muscles that only 1% of humans can consciously control, likely uses many more muscles than a frown. The number of muscles used in a smile can also vary from person to person, as not everyone has the same number of facial muscles. Some people have more muscles, enabling a wider range of expression, while others have up to 40% fewer muscles.
Research has shown that smiling can have positive effects on people's emotional states and stress levels. Even if someone is not genuinely happy, activating the muscles associated with smiling can trick their brain into thinking they are. This can lead to the release of endorphins, the body's natural painkillers, resulting in feelings of happiness and reduced stress.
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A smile that uses the eye muscles takes more muscles than a frown
The number of muscles used in a smile or a frown has been a long-standing topic of discussion. It is believed that a smile takes anywhere between 13 to 26 muscles, while a frown takes 37 to 62 muscles. However, these numbers vary depending on the type of smile or frown and the person's unique facial structure.
A "true" smile, one that involves the eye muscles, is believed to take more muscles than a frown. This type of smile is considered a genuine expression of happiness and only about 1% of humans can consciously control these eye muscles. On the other hand, a minimal smile or a smirk that only raises the corners of the mouth may involve as few as four muscles, similar to a basic frown that only lowers the corners of the mouth.
The debate around the number of muscles involved in a smile or a frown is further complicated by the fact that not everyone has the same number of facial muscles. Some people have a wider range of expression due to having more muscles, while others may have up to 40% fewer muscles, leading to variations in how they smile or frown.
While the exact number of muscles used in different expressions remains uncertain, the act of smiling itself has been found to have numerous benefits. Research suggests that smiling can lower heart rate and stress levels, and it can even fool your brain into thinking you're happy due to the release of endorphins. So, the next time you're feeling blue, try cracking a smile!
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A true smile takes more muscles than a false smile
There is a popular belief that it takes fewer muscles to smile than to frown. This has led to the idea that smiling is easier and better for your health than frowning. However, the truth is more complex. While some sources state that it takes 17 muscles to smile and 43 to frown, others claim that a smile uses 26 muscles while a frown uses 62. The reason for this discrepancy is that there is no standard definition of a smile or a frown, and not everyone has the same number of facial muscles.
A "true" smile, which involves the eye muscles that only 1% of humans can consciously control, likely uses many more muscles than a "false" smile, which may only involve a slight upturn of the corners of the mouth. A false smile, in this case, would use fewer muscles than a frown, which requires lowering the corners of the mouth and a slight pouting of the lower lip, using six muscles in total.
However, it's important to note that the number of muscles used is not the only factor in determining the effort required for an expression. Contracting a large muscle may require more exertion than engaging several smaller ones. Additionally, the zygomaticus major muscle, often associated with smiling, pulls the orbicularis oris (the circular muscle of the mouth) upwards, sending signals to the brain that you are smiling. This releases endorphins into the bloodstream, reducing stress and improving your mood.
Research supports the idea that smiling, even if it's forced, can have positive effects on your body and those around you. A study at the University of Kansas found that participants who used chopsticks to shape their mouths into smiles during a stressful situation had lower heart rates and stress levels than those faking frowns. This suggests that activating the muscles associated with smiling can trick your brain into feeling happier.
So, while the number of muscles used in a "true" smile versus a "false" smile may vary, the act of smiling, regardless of its authenticity, can lead to beneficial physiological and psychological effects.
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A robotic smile takes four muscles
Smiling and frowning are two of the most common facial expressions, and they are often used to indicate emotions. While it is commonly believed that it takes fewer muscles to smile than to frown, the truth is that the number of muscles used in each expression can vary depending on the person and the type of smile or frown.
A ""true" smile that involves the eye muscles, which only 1% of humans can consciously control, likely requires more muscles than a frown. On the other hand, a slight upturn of the corners of the mouth, often described as a "robotic" smile, only uses two pairs of muscles, or four muscles in total. Similarly, a frown that merely lowers the corners of the mouth with a slight pout of the lower lip uses three pairs of muscles, or six muscles, and a more "robotic" frown uses only two pairs of muscles, or four muscles, the same number as a "robotic" smile.
The idea that it takes fewer muscles to smile than to frown has persisted for generations, with various sources claiming that it takes 13, 17, 22, or 26 muscles to smile, while frowning requires 37, 41, 43, or even 62 muscles. However, these numbers are not definitive, as the number of muscles used in a smile or frown can vary depending on the individual and the specific expression.
Research has shown that smiling can have positive effects on our physical and mental health. For example, a study at the University of Kansas found that participants who simulated smiles had lower heart rates and stress levels than those who faked frowns. Additionally, smiling can release endorphins, the body's natural painkillers, into the bloodstream, leading to feelings of happiness and well-being.
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Smiling releases endorphins and can lower your heart rate and stress levels
Smiling is often associated with happiness and positive emotions. Research has shown that smiling can also be driven by other factors, such as being polite, appearing approachable, or even embarrassment or fear. However, the effects of smiling on our mental and physical health are well-documented. Smiling releases endorphins, which can help lower stress levels and promote a sense of calm.
A study conducted by psychological scientists Tara Kraft and Sarah Pressman of the University of Kansas explored the impact of smiling on stress and heart health. They found that participants who were instructed to smile, particularly those with genuine or Duchenne smiles, had lower heart rates after recovering from stressful activities compared to those with neutral expressions. Even participants who held chopsticks in their mouths to simulate a smile, without explicit instructions to smile, experienced lower recovery heart rates.
The lead researcher, Sarah Pressman, explained that activating the facial muscles used for smiling sends a message to the brain, indicating happiness and triggering a calming response. This response can lead to a reduced perception of stress and a feeling of being less threatened. The study supports the idea that smiling can help us "grin and bear it," suggesting that it may be beneficial to hold a smile during stressful situations to promote heart health and reduce stress levels.
Additionally, laughter, which often accompanies smiling, can further enhance these positive effects. Laughter stimulates circulation, helping muscles relax and reducing physical stress symptoms over time. It also leads to the release of dopamine, endorphins, and serotonin, contributing to an improved mood and increased feelings of happiness. The stress reduction effects of laughter are well-documented, and it is believed that those who smile and laugh often may have longer lives than those who don't.
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Frequently asked questions
There is no definitive answer to this question. While some sources claim that it takes 43 muscles to frown and 17 to smile, others claim it takes 62 muscles to frown and 26 to smile. Some even argue that it takes more muscles to smile.
The number of muscles involved in a smile can vary depending on the type of smile. A restrained smile that only raises the corners of the lips and the upper lip involves 10 muscles. However, a more genuine smile that involves the eye muscles can require significantly more muscles.
The number of muscles involved in a frown can also vary. A basic frown that lowers the corners of the mouth and pouts the lower lip uses six muscles. A more intense frown that brings the eyebrows together and wrinkles the forehead may involve even more muscles.
While it may be true that a basic smile requires fewer muscles than a basic frown, this does not necessarily mean that smiling is easier. Activating a large number of small muscles may still require more effort than activating a smaller number of larger muscles.
Yes, smiling has been associated with various benefits. Research suggests that smiling can lead to lower heart rates and reduced stress levels. Additionally, activating the muscles associated with smiling can trick your brain into feeling happier, leading to the release of endorphins, which are the body's natural painkillers.



































