Scientists Arena

Hair follicles develop during the fetal stage in those spots, resulting in hair growth in various locations on the body.

📌During early embryonic development, genes determine where hair follicles will form on the skin. This happens based on biological programming, not because ancestors had specific uses for hair in those locations.

✅So in summary, hair grows where it does primarily because hair follicles developed in those locations during the fetal stage, and often to serve functional purposes like temperature regulation, sensation and protection.