Men can sit with their legs crossed, but many find it noticeably less comfortable than women do. The main reason is skeletal: the male pelvis is narrower and shaped differently, which limits how easily one thigh can rotate over the other. Reproductive anatomy adds another layer of discomfort, and social conditioning plays a role too.
The Male Pelvis Is Built Differently
The pelvis is the single biggest factor. In people with male reproductive systems, the pelvis is taller, narrower, and more compact. The hip sockets sit closer together and angle outward. The pubic arch forms a narrow V shape, and the whole structure tapers from top to bottom. This design is optimized for upright walking and running, not for the kind of hip flexibility that makes leg crossing easy.
In people with female reproductive systems, the pelvis is broader and shallower, built to accommodate childbirth. The hip sockets are farther apart and angled inward, the pubic arch is wider, and the sitting bones are spaced further from each other. All of this gives the thighbones more room to rotate inward, which is exactly the motion you need to comfortably cross one knee over the other. A wider pelvis also means the thighs naturally angle inward more steeply from hip to knee (a measurement called the Q-angle), making the cross feel more natural.
None of this means men physically cannot cross their legs. It means the position requires more effort against the skeleton’s natural alignment, so it feels tighter and less stable. Men with more flexible hips or a wider build will find it easier than others.
Reproductive Anatomy Gets in the Way
The testicles are an obvious but real factor. Crossing the legs at the knee compresses the inner thigh area, and for many men this creates pressure ranging from mildly awkward to genuinely painful. The body’s instinct is to avoid that compression, which is partly why men tend to default to a wider sitting stance.
There’s also a temperature issue. The testes hang outside the body because sperm production requires a temperature slightly below core body heat. Research published in the journal Fertility and Sterility found that sitting with legs crossed is “thermogenic,” raising scrotal temperature as much as wearing additional clothing layers does in other positions. That warming effect even persisted into whatever position came next. While occasionally crossing your legs isn’t a fertility concern, it’s one more signal from the body that the position isn’t ideal.
What Leg Crossing Does to Your Spine and Pelvis
Regardless of sex, crossing one leg over the other changes your spinal alignment in measurable ways. A study in the Journal of Physical Therapy Science found that sitting with the right leg crossed caused the right side of the trunk to shorten, rotated the right pelvis backward compared to the left, and created a lateral curve: concavity on the crossed side, convexity on the opposite side. In other words, your pelvis tilts and your spine bends to compensate.
Over time, this left-right asymmetry increases rotation in the lumbar spine. The researchers concluded that habitual leg crossing could contribute to pelvic torsion and spinal misalignment. This applies equally to men and women, but since men already have less hip flexibility to absorb the position comfortably, they’re more likely to slump or twist further to maintain it, compounding the postural effects.
Blood Pressure and Circulation
Crossing your legs at the knee temporarily raises blood pressure. In people with normal blood pressure, systolic pressure (the top number) increases by about 2.7 mmHg. In people with high blood pressure, the jump is larger: roughly 6.7 mmHg systolic and 2.3 mmHg diastolic. For people being treated for diabetes, the increase was about 7.9 mmHg systolic. Crossing at the ankles, by contrast, produced no significant change in any group.
One common worry is that leg crossing causes varicose veins. According to Mayo Clinic, this is a myth. The external pressure from crossing your legs is too minimal to damage veins. However, staying in any position for a long time does make it harder for blood to circulate efficiently, and if you already have varicose veins, prolonged crossing can worsen symptoms.
Social Expectations Shape How Men Sit
Biology explains the discomfort, but culture explains a lot of the behavior. In many Western societies, sitting with legs apart has long been coded as masculine, while crossing legs has been associated with femininity. Sociologist Marianne Wex documented this in nearly 5,000 photographs of men and women, showing how bodily posture both reflects and reinforces gender norms. Her research, published in 1979, traced these patterns through historical art as well, demonstrating that the way people “perform” gender through sitting is deeply ingrained.
The flip side of this cultural norm became visible in the “manspreading” debate on public transit, where men sitting with widely spread legs drew criticism for occupying excess space. The sociological framing suggests that men are socially permitted to take up more room, and that this is part of a broader set of accumulated advantages in how bodies are disciplined differently based on gender. So some men who could cross their legs comfortably may simply never develop the habit because nothing in their social environment encourages it.
How to Sit More Comfortably
If you want to cross your legs and it feels uncomfortable, the limiting factor is usually hip flexibility. Stretching the hip rotators, particularly the muscles deep in the buttock, can gradually increase your range of motion. Yoga poses that involve seated twists or pigeon pose target exactly the rotation pattern that leg crossing demands.
If you’re sitting for long periods at a desk, OSHA’s ergonomic guidelines recommend keeping your thighs roughly parallel to the floor, knees at about the same height as your hips, and feet fully supported. More importantly, no single posture is healthy if you hold it for hours. The best approach is to shift positions frequently: adjust your chair, stand up, walk around for a few minutes, and stretch your hands, arms, and torso throughout the day. Crossing your legs occasionally is fine for most people. Making it your default position for eight hours is where problems accumulate.