Faster cervical dilation - childbirth in a sitting position makes the child's head press harder on the cervix and intensifies the process of cervical dilation. In the lying position, the pressure of the head on the cervix is minimal, so the process of cervical dilation is much slower and more difficult and requires a lot of effort from both the mother and the child.

Increased regularity and intensity of contractions - the time of delivery in vertical positions compared to traditional delivery is shortened even by 35%. The increase in the dynamics of childbirth and shortening of its duration do not require increased effort from  the woman in labour. In the sitting position, the perineum muscles remain relaxed and the need to use pain relieving agents is very limited.

Better oxygenation of the child - thanks to the vertical position, the placenta is better supplied with blood and, as a result, the child receives more oxygen. In the supine position, the abdominal aorta and the superior upper vein are compressed, making it difficult for the child to oxygenate.

Easier breathing - The sitting position makes it easier to adjust breathing to contraction, which allows the control of the rhythm of delivery. Deep and free breathing reduces the feeling of pain to a greater extent. Breathing in women lying in a position on the back is shallow, which prevents the full use of the diaphragm.

Reduced anxiety and tension - vertical position increases the production of natural oxytocin, thanks to which the process of delivery is faster and regular. Adrenaline level in the body is very limited, so it does not inhibit contraction. Childbirth in a lying position increases the secretion of adrenaline. Childbirth is slowed by increased anxiety, which disturbs the mechanism of birth and hormonal balance.

Better pressure - the vaginal passage is directed downwards and an additional force in the form of gravity is applied, which makes it possible for the child to move along the vaginal passage and strengthens the contraction force. Lying on the delivery bed makes the vaginal passage positioned obliquely upwards. The uterine muscle works by overcoming the additional resistance of gravity, which bothers but do not help. The child moves in the birth canal with difficulty because the child is pushed with gravity towards the mother's spine.

Reduced risk of perineal tearing – during the process of pressing, the perineum tissues are evenly stretched when the child’s head is moving. In the back position, the child's head presses the perineum around the anus most strongly. Despite the possible episiotomy, the vaginal mucous membrane and walls can be affected.