THE EFFECT OF ABDOMINAL STRETCHING EXERCISES ON DHYSMENORREA DECREASE OF ADOLESCENT IN ENVIRONMENT DUSUN III, HELVETIA SUB- DISTRICT, SUNGGAL, MEDAN. HMaps [Internet]. 2026 Jun. 30 [cited 2026 Jul. 31];4(1):8-17. Available from: https://www.ejournal.ummuba.ac.id/index.php/HealthMAPs/article/view/4527