We get dimples on cheeks due to a variation in the zygomaticus major facial muscle, which lifts the corners of the mouth during smiles.
It is formed when muscles contract and draw the skin inward, or when a tiny ligament connects the skin to the underlying muscle.
Dimpled people either have a bifid zygomaticus major muscle with two distinct nerve bundles or an undeveloped hypoplastic zygomaticus major muscle.
Its major genetic feature is that it develops only one copy from each parent.
Dimples are a natural feature that is associated with attractiveness and youth, while some people prefer to have them surgically made.
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