Why Ancient Practice Yoni steaming. Soothe and revitalize your reproductive system with the ancient practice of yoni steaming.Yoni steaming, also known as vaginal steaming, is a practice in which a woman allows the warmth of herbal steam to permeate the exterior of her vagina. Respected by healers around the globe, yoni steaming is an opportunity to reconnect with your body and utilize the wisdom of plant medicine to heal your cycle.