The term "core muscles" refers to a group of muscles located in the center of the body, including those in the abdomen, lower back and hips. These muscles are essential for maintaining balance, stability and strength during various physical activities such as walking, running or lifting weights. They also play an important role in protecting the spine from injury. The core muscles include the rectus abdominis, transverse abdominis, obliques, erector spinae, and hip flexors among others. Strengthening these muscles is crucial for overall fitness as they help improve posture, balance and stability while reducing the risk of back injuries.