Gym-goers tend to focus on surface-level muscles when training their core—but beneath the surface lies the deep core, an ...

Cole Barash for The New York Times Surrounding the spine are the core muscles. Although we tend to think of our core as the abdominals, it also includes the deep back muscles, as well as the hip ...

Over time, relying too much on crunches can lead to muscle imbalances, poor posture, and even back or neck strain. If you’re looking for exercises that actually engage your deep core muscles ...

Benefits: Engage the abdominals and pelvic floor muscles, while the flexion in the upper back helps to improve ... with the PFCA to bring a deeper understanding of training techniques, fitness ...