After a baby and placenta are delivered, the uterus must contract hard to close the blood vessels left behind, but sometimes it stays soft and relaxed , a condition called uterine atony which is the leading cause of death from postpartum hemorrhage and the vidio shows bimanual uterine compression where a provider puts a gloved fist inside the uterus and the other hand on the outside of the mother's abdomen to compress the uterus tightly between the two hands, which mechanically closes bleeding vessels, stimulates the uterus to start contracting again, and helps check for retained clots or placenta, and when combined with medications like oxytocin and IV fluids, this pressure can stop severe bleeding within minutes and save the mother's life.