
It is often said that it takes more muscles to frown than to smile, but is there any truth to this? The idea that frowning takes more muscles has been a part of our cultural landscape for so long that no one knows where it began. While it is difficult to determine the exact number of muscles involved in a smile or a frown, as the expressions vary from person to person, researchers have found that a minimal frown requires only six muscles to lower the corners of the mouth, while a smile of the same subtlety requires ten muscles. However, a true smile, which involves the eye muscles, may take more muscles than a frown.
| Characteristics | Values |
|---|---|
| Number of muscles used in frowning | 6, 11, 37, 41, 43, 62 |
| Number of muscles used in smiling | 10, 12, 17, 22, 26 |
| Frowning muscles | Orbicularis oculi, Levator labii superioris, Levator anguli oris, Risorius, Platysma, Corrugator supercilii, Orbicularis oris, Mentalis |
| Smiling muscles | Orbicularis oculi, Levator labii superioris, Zygomaticus major and minor, Levator anguli oris, Risorius, Platysma, Corrugator supercilii, Orbicularis oris, Mentalis |
| Frowning expression | Eyebrows are brought together, forehead is wrinkled, downturning of the mouth |
| Smiling expression | Uplifted corners of the mouth, uplifted upper lip, crinkling of the skin around the eyes |
| Frowning impact | Makes one feel worse, ranked images as more unpleasant |
| Smiling impact | Makes one feel better, ranked images as more pleasant |
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What You'll Learn

Frowning can make you feel worse
The old adage, "it takes more muscles to frown than to smile," has been around for so long that its origins are now forgotten. However, this saying is not entirely accurate, as the number of muscles involved in a smile or a frown varies depending on the type of smile or frown, and the individual's facial musculature.
While the exact number of muscles involved in a frown or a smile varies, a minimal frown that lowers the corners of the mouth requires the use of six muscles, while a minimal smile that raises the corners of the lips and the upper lip requires ten muscles. On the other hand, a "zygomatic" or genuine smile involves the contraction of twelve muscles.
Regardless of the exact numbers, the core message behind the adage remains relevant: it takes more effort to frown, so why not turn that frown upside down? Research supports this idea, showing that holding a frown can negatively impact our perception of the world around us. In a scientific study, participants who held their faces in a frown ranked images as more unpleasant than those who viewed the same images with a neutral expression. Similarly, participants reported increased anger and found cartoons less funny when manipulated to hold a frown.
Additionally, smiling has a positive impact not just on ourselves but also on those around us. Research has shown that people tend to mirror the facial expressions they see, so a smile can brighten not only your day but also the day of those around you. So, the next time you feel blue, try smiling—it might just make you and those around you feel a little bit brighter.
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The number of muscles used to frown
There is no definitive answer to the question of how many muscles are used to frown. While some sources claim that a frown requires the use of 11 muscles, others state that it can be as few as six or as many as 62. The variation in these figures may be due to the different types of frowns being considered, such as those that involve only the mouth or those that also include furrowing of the brow.
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. If this frown is further reduced to a robotic expression, it uses only two muscle pairs or four muscles. On the other hand, a frown that incorporates the furrowing of the brow, indicating displeasure, sadness, or worry, or less often confusion or concentration, involves more muscles.
The idea that frowning takes more muscles than smiling is a popular belief that has been around for a long time. This belief is based on the premise that frowning requires more effort and is, therefore, more taxing than smiling. However, the number of muscles used in a smile or a frown can vary depending on the individual's facial structure and the type of smile or frown being expressed.
Some sources claim that a "true" smile, one that involves the eye muscles and indicates genuine joy, may require more muscles than a basic frown. Additionally, the energy consumed by each muscle and the individual variability in facial muscles should be considered when discussing the effort required for different facial expressions.
While there is no consensus on the exact number of muscles used to frown, it is generally accepted that frowning requires a greater number of muscles than smiling, contributing to the perception that frowning is a more effortful and negative expression.
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The number of muscles used to smile
There is no definitive answer to the question of how many muscles are used to smile. The number of muscles used in a smile or a frown depends on the type of smile or frown, and the person doing the smiling or frowning.
A smile that only raises the corners of the lips and the upper lip uses five muscle pairs (10 muscles), but a more robotic smile that only raises the corners of the mouth uses two muscle pairs (four muscles). A "true" smile, which involves the eye muscles, probably takes more muscles than a frown. However, a slight upturn of the mouth could be achieved with just one or two pairs of muscles.
A "Duchenne smile" (a smile that causes crinkling of the skin around the eyes, indicating genuine joy) uses 12 principal muscles, according to plastic surgeon David H. Song. Song also maintains that it takes less effort to smile, because the muscles involved are used more often, and smiling is easier to replicate than a frown.
However, it is difficult to determine the exact number of muscles used in a smile or a frown, as there are a wide variety of facial expressions that could be considered a smile or a frown, and not everyone has the same number of facial muscles.
Some sources claim it takes 17 muscles to smile, while others give the number as 22 or 26.
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The energy consumed by facial muscles
The energy consumed by the facial muscles during expressions is an interesting topic of discussion. Facial expressions are a way of transmitting information that can be interpreted by others. By contracting or expanding our facial muscles in different degrees and combinations, we can convey our emotional state, short-term feelings, mental well-being, personality, mood, physical health, and credibility.
There is a popular belief that frowning consumes more energy than smiling because it involves a greater number of facial muscles. This belief has been expressed in various forms, such as "It takes 43 muscles to frown and only 17 muscles to smile" or "It takes 37 muscles to frown and 22 muscles to smile." However, it is important to note that there is no definitive answer to the number of muscles used in a smile or a frown. The truth is that people smile and frown differently, and the same expression can be interpreted differently by different people.
The energy consumption of facial muscles during a frown or a smile depends on various factors, including the type of expression, the individual's facial musculature, and the effort exerted. For example, a minimal frown that lowers the corners of the mouth with a slight pouting of the lower lip involves six muscles, while a more expressive frown that furrows the brow and raises the upper lip may involve 11 muscles. Similarly, a subtle smile that raises only the corners of the lips and the upper lip involves 10 muscles, while a genuine smile that crinkles the eyes and indicates genuine joy may involve 12 muscles.
Additionally, it is important to consider that the energy consumption of facial muscles is not solely determined by the number of muscles used but also by the type of muscle and the level of exertion. For instance, it may require more energy to flex one large muscle than to engage several smaller ones. Furthermore, the frequency of an expression can impact the energy consumption of the facial muscles. Muscles that are used more often may become more efficient at performing that action, requiring less energy over time.
In conclusion, while there is a common belief that frowning consumes more energy due to the greater number of muscles involved, the reality is more complex. The energy consumption of facial muscles during a frown or a smile depends on various factors, including the type of expression, individual differences in facial musculature, and the level of effort exerted.
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Facial expressions are contagious
There is a popular belief that it takes more muscles to frown than to smile. This belief is often used to encourage people to smile more, as it implies that smiling is easier and therefore more desirable. However, the truth is that the number of muscles used in a frown or a smile varies depending on the individual and the type of expression. For example, a minimal frown that only lowers the corners of the mouth may use as few as six muscles, while a more expressive frown involving the furrowing of the brow and movement of the cheeks can use more muscles. Similarly, a subtle smile that only raises the corners of the lips may use fewer muscles than a broader smile that also involves the eyes.
The idea that frowning takes more muscles than smiling has persisted for generations, with various sources claiming different numbers of muscles for each expression. Some claim it takes 43 muscles to frown and 17 to smile, while others suggest 50 muscles to frown and 13 to smile, or even 62 to frown and 26 to smile. However, these numbers are not definitive and do not consider individual differences in facial musculature or the energy consumed by each muscle.
Despite the lack of scientific consensus on the exact number of muscles used in frowning or smiling, the belief that frowning takes more effort has led to the concept of "emotional contagion." Emotional contagion refers to the tendency for individuals to mimic the facial and bodily expressions of others, leading to an emotional convergence. In other words, when we see someone frowning, we may subconsciously frown ourselves, and this shared expression can lead to a shared emotional experience.
Research has confirmed that facial mimicry occurs and is accompanied by corresponding emotional experiences. For example, participants in a study who held their faces in a frown ranked images as more unpleasant than those with a neutral expression. This phenomenon has been observed in responses to a range of emotions, including anger, sadness, disgust, and happiness. Understanding emotional contagion is important in broader social and communicative contexts, as it can influence our interactions and interpretations of others' emotions.
In conclusion, while the number of muscles used in a frown or a smile may vary, the perception that frowning takes more effort has led to the concept of emotional contagion. This phenomenon highlights the contagious nature of facial expressions and their impact on our social interactions and emotional experiences.
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Frequently asked questions
There are many conflicting answers to this question. Some sources claim that it takes 43 muscles to frown and 17 to smile, while others claim that it takes 37 muscles to frown and 22 to smile. Some naysayers claim the opposite, that it takes more muscles to smile than to frown. The truth is that there is no definitive answer, as the number of muscles used depends on the type of frown or smile, and the individual's facial structure.
One source claims that a minimal frown that lowers the corners of the mouth uses six muscles, while a smile that raises the corners of the lips and the upper lip uses ten muscles. Another source claims that a "zygomatic" (genuine) smile uses 12 muscles, while a basic frown uses 11.
The definition of a frown or a smile can vary between individuals and cultures, and not everyone has the same number of facial muscles. Additionally, the energy consumed by each muscle and the individual variability in facial muscles should be considered when determining the effort required for different expressions.











































