Before revision: The practice aims to gently mimic the 'massaging' action of a baby's head on the opening to the birth canal (vagina) prior to birth, so works with nature, to achieve the 10cm diameter opening without using the back of baby's head, i.e., doing some of the hard work of labour (birth) before the start of labour, making birth less stressful on the baby and mother.
After revision: The practice aims to gently mimic the 'massaging' action of a baby's head on the opening to the birth canal (vagina) prior to birth, so works with nature, to achieve the 10 cm diameter opening without using the back of baby's head, i.e., doing some of the hard work of labour (birth) before the start of labour, making birth less stressful on the baby and mother.