I know you may be skeptical however the reason men sit with their legs apart is anatomical; external genitalia is a factor, but bone structure is also part of the issue
- Testicles are painful to squish, it is also unhealthy for them to be kept at body temperature, thus the issue is discomfort and health.
- Ischium bones in men, the bones you sit on, are closer together, meaning men have a smaller point of contact.
- The inferior pubic rami, used to balance when you sit, is 20-30 degrees narrower in men, resulting in less stability; additionally, it makes sitting with one’s legs apposed unnatural.
- Men have cylindrical thighs, as opposed to conical thighs, further compounding the issue of sitting with one’s thigh’s apposed.
- Men have narrower acetabulum, meaning their thighs are closer together, resulting in less space between them, further compounding the above, the issue of external genitalia, and reducing the amount of balancing leverage available when sitting with one’s thighs apposed.
- Men have more lateral facing acetabulum, meaning their legs swing forward, backward, and out; women have more anterior facing acetabulum, meaning their legs not only have a greater ability to swing inward, but do so naturally when moving forward, like when sitting or walking (thus the swaying hips).
- Men have wider, heavier upper bodies, thus require more stability.