Answer (1 of 7): Yes it certainly does but it’s a slow time consuming process, and it takes a while to develop the habit of keeping your tongue in the roof of your mouth, however there are ways to pop your jaw line faster and when combined with mewing are extremely effective for a chiseled jaw. 1
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I am 16 and I have significantly small chin and bad jawline. I am
How to get a chiseled jawline - Quora
How to get a chiseled jawline - Quora
Does working out indirectly give you a chiseled jawline? - Quora
What is mewing? The jawline-tightening move that celebrities