For a long time, these dimples were thought to be entirely genetic. Genetics do play a major role, since bone structure and ligament placement help determine whether they appear. However, their visibility can also be affected by general body composition and the development of the muscles around the lower back and hips.
This means their appearance is linked not only to inherited anatomy but also to the surrounding muscle structure. Stronger lower-back, core, and hip muscles can make the area look more defined, while the amount of soft tissue in that region can make the dimples more or less noticeable.
Overall, these dimples are simply a natural anatomical feature shaped by both genetics and physique. While the underlying structure cannot be changed, the muscles around that area can influence how visible they appear. In that way, they reflect both inherited body structure and the condition of the surrounding muscles.
