Why You Have a Weak Jawline (and How to Fix It)

Facial aesthetics largely relies on having a strong jawline. If you have a weak jawline or receding chin, you’re probably looking for solutions. But the best place to start is by investigating why you have a weak jawline in the first place…

What Is a Weak Jawline?

A weak jawline can be defined by a few key factors. For most people, a hallmark characteristic of a weak jawline is a receding chin, where the chin is set back from the face. However, a weak jawline may also mean a jawline which is round and puffy, or poorly defined.

In the traditional school of thought, a weak jawline is caused by two things:

  • Genetics: You were born with a narrow or round jawline, and your jawline might not be prominent as the jaw bone is extremely close to the neck.
  • Excess Fat: The fat around the neck area completely covers the jawline thus making it invisible.

As I explain in 30 Days to a More Attractive face, both of these points are probably true. However, there is definitely more to the puzzle.

Causes of a Weak Jawline

Shocking studies and revelations conducted 30 years ago are finally catching fire across social media platforms. A study by Professor John Mew revealed that our facial structure largely relies on our tongue posture.

As per the journal ‘The Topic Premise, published by Dr Mew in 1981, “The ideal development of the jaws and teeth is dependent on correct oral posture with the tongue resting on the palate, the lips sealed and the teeth in light contact for between four and eight hours a day.”

Including tongue posture, here are three more factors that may cause a weak jawline:

1. Poor Tongue Posture: Poor tongue posture has got a lot to do with a weak jawline. The majority of us just let the tongue rest freely. However, Dr Mew suggests it’s this improper tongue posture which affects the development of our jawline. Ideally, your tongue should touch the roof of your mouth from back to front. It should support your palate which in turn makes your facial structure strong.

2. Soft Food: Increasingly sedimentary lifestyles and poor eating habits may also be to blame. People are no longer interested in chewing food. We mostly eat soft food, while fries, coke, burgers and peanut butter jelly are all gulped down directly without any chewing.

3. Poor Upper Body Posture: This one might come off as weird, but it has a direct correlation with your facial structure. Your slouching body posture in no way is going to help your jawline development. After all, your body is well connected: if your upper body posture is weak, it’s very likely that your tongue posture will be poor, thereby contributing to a weak jawline.

As mentioned before, though, genetics and fat around your neck do have an important say in the appearance of your jawline. If you indeed have a weak jawline, or you were born with one, you still possess the power to change it. There are numerous activities you can do to ensure you develop a strong jawline over some time, which brings us to…

How to Fix a Weak Jawline

1. Mewing: According to Dr John Mew, mewing is the proper tongue posture which comes with a variety of health benefits. Following the principles of Wolff’s law, Dr John Mew discovered that crooked teeth are a result of abnormal growth in mandible and maxilla (lower and upper jaw). Mewing is the practice of maintaining a correct tongue posture at all times to ensure vacuum creation and nasal breathing.

Note: Mewing will help you attain a correct oral posture and can positively impact the bones in your face. When mewing, ensure not to lean your lower jaw forward as it may affect the temporomandibular joint. Instead, focus on the tongue position and leave the jaws in the natural closing position.

2. Chewing Gum: Chewing gum is a crucial part of the 30 Days to a More Attractive Face method. The science behind it is quite simple: it keeps your jaw moving. As long as it is in motion and you’re making it work, it is bound to get stronger over time. The muscles in and around our jaws get activated, resulting in a stronger jawline.

3. Facial Exercisers: Fitness celebs across the world have endorsed facial workouts for as long as we can remember. Facial exercises were considered bogus in the early days due to a lack of research. However, the trend has changed and studies have backed up the impact of facial exercises, causing companies to develop facial exercising products. Just like chewing, these exercisers can certainly help.


A weak jawline can be a product of genetics, excess fat, poor eating habits, and poor posture, but you can overcome it!

We hope this blog answers the questions in your head and if you would like to learn more about mewing in general, visit MewingPedia.com or become a part of their forum.

Thomas Bush

Since 2017 I've been researching the weird and wonderful practice that is mewing. I discovered mewing in late 2017 through an obscure YouTube video. Since then, I’ve been on a quest to find out the facts about this weird and wonderful practice. The goal of this website is to share a

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