khusnul nikmah, E. . Sarofah Ningsih, and V. . Yushofa, “The The Correlation Between Participation In Pregnancy Workouts And Perineum Ruptures Incidence In Woman With Normal Labor At The Sumengko Village Maternity Cottage, Lamongan District”, JHS, vol. 14, no. 02, pp. 141–146, May 2021.