No, mewing cannot change your face shape. According to current information, it's not possible to alter bone morphology or change the bite or facial shape through mewing alone.
While some proponents suggest that mewing, the practice of proper tongue posture, can alter facial structure, evidence to support this claim is limited. The primary issues are that:
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Bone Structure: Mewing cannot change bone structure. Facial shape is largely determined by underlying bone structure.
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Bite Alteration: Mewing cannot alter the bite. The bite is determined by your dental structure.
Therefore, mewing alone cannot change face shape because it's not possible to change bone morphology or alter the bite or facial shape through these exercises alone.
