It can cause multiple problems. Without the dynamic stabilisation of our core, weak abdominal walls can jeopardise trunk stability and mobility, compromise posture and contribute to chronic and severe back pain. It can also lead to spinal instability, pelvic floor dysfunction, urinary incontinence, bowel issues, possible hernia(s), or even affect vaginal delivery. Back and pelvic pain are the most common manifestations of rectus diastasis.