or right or left side of your abdomen. You have four groups of abdominal muscles: These muscles stabilize the core, rotate the torso, and flex the spine. A strain in these muscles can cause pain ...

Lower left back pain is muscle, organ, or nerve-related. This article helps you get closer to what’s causing continued pain ...

MELBOURNE, Australia (AP) — Two-time Australian Open champion Naomi Osaka stopped playing because of a strained abdominal muscle ... injury.” The two players hugged on the sideline, and Osaka ...