Those two subtle indentations located on the lower back, resting just above the glutes, have long been a source of fascination and aesthetic appreciation. Often referred to as Venus dimples in women and Apollo dimples in men, these features are more than just a visual quirk. Medically known as sacral or lumbosacral dimples, they serve as a unique marker of human anatomy, occurring precisely at the junction where the pelvis and spine meet. Specifically, they indicate the position of the posterior superior iliac spine (PSIS), a point where a short ligament attaches the skin to the underlying bone, pulling it inward to create a natural, permanent dip.
For generations, it was widely believed that these dimples were a purely hereditary trait. The common consensus was that if you weren’t born with the specific genetic blueprint for Venus or Apollo dimples, you simply wouldn’t have them. However, our modern understanding of human physiology suggests a more complex reality. While the structural foundation is indeed genetic—defined by the length of the ligaments and the shape of the pelvic bone—environmental and lifestyle factors play a massive role in their visibility. Because these dimples are located in an area where the body naturally stores fat, their prominence is heavily influenced by a person’s body fat percentage and
This revelation has shifted the conversation from pure genetics to fitness and physique. High muscle tone in the erector spinae and gluteal muscles can deepen the appearance of these indentations, making them stand out as a sign of athletic health and a strong posterior chain. For those looking to emphasize this anatomical feature, targeted resistance training is the most effective approach. Since the dimples are situated at a crucial structural intersection, strengthening the surrounding muscles not only improves their definition but also enhances spinal stability and core strength.
