The oblique muscles are a group of muscles located on the sides of the abdomen. They play a crucial role in trunk rotation, lateral flexion, and stabilization of the core. There are two main types: the external obliques, which are on the outer side, and the internal obliques, located beneath them. These muscles are essential for various movements, such as twisting the torso and bending sideways. Strengthening the oblique muscles can improve athletic performance and support overall body mechanics. Exercises like planks and Russian twists are commonly used to target these muscles effectively.