what does pop in shoulder indicate while lifting
Photo Credit resistance bands image by sparkia from Fotolia.com. The shoulder has an intricate framework of muscles that surrounds the joint known as the rotator cuff. When you feel or hear popping sounds while exercising, throwing or simply moving your shoulder up and down, it is due to an injury to your rotator cuff. Anatomically, these muscles are referred to by the acronym SITS, which stands for supraspinatus, infraspinatus, teres minor and subscapularis.