Siddha Yoni Asana (accomplished pose for women):-

Sit with the legs straight in front of the body.

Bend the right leg and place the sole of the foot flat against the inner left thigh.

Place this heel firmly against or inside the labia majora of the vagina.

Adjust the body position so that it is comfortable while simultaneously feeling the pressure of the right heel.

Bend the left leg and place the left heel directly on top of the right heel so it presses the clitoris, and wedge the left toes down into the space between the calf and thigh so  they touch, or almost touch, the floor.

Grasp the toes of the right foot and pull them up into the space between the left calf and thigh.

Again, adjust the position so that it is comfortable.

Ensure that the knees are firmly on the ground.

Make the spine fully erect and straight as though it were planted solidly in the earth.

Place the hands on the knees is chin, jnana or chinmaya mudra.

Close the eyes and relax the whole body.

Contra-indications:

As for siddhasana.
Benefits:

As for siddhasana.

Note:

The Sanskrit word yoni means womb’ or ‘source’.