IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-13-2-54868 Original Research Paper Pre-Experimental Study To Evaluate The Effectiveness Of Progressive Muscle Relaxation Therapy On Stress Among Postnatal Mothers Of Preterm Baby In Tripura Medical College Paunami Dey Dr. Miss.Sutapa Paul Dr. February 2024 13 2 01 02