Physiotherapist mentioned poor posture is a primary cause of vertebral subluxations (misalignments of the spine). Vertebral subluxations cause numerous health problems, such as carpal tunnel, headaches, backaches, colic in infants, and ear infections in children. The damage caused by poor posture can also cause pain in other parts of your body, such as your shoulders, hips and knees. Good posture and exercises are important because this can strengthen the skeletal system and prevent further damage to the neck.