Correct posture maintains the natural curves of the spine and places minimal stress on joints, while faulty posture increases stress and can lead to muscle imbalances and circulatory issues. Factors that can influence posture include growth spurts, muscle imbalances, habits, structural anomalies, and trauma or disease. The spine has primary curves in the thoracic and sacral regions and secondary curves in the cervical and lumbar regions. Deviations from normal spinal curves can cause muscle imbalances. Maintaining proper spinal alignment from the front and side views is important for functional symmetry during activity with low joint stress. Identifying postural problems allows for corrective exercises, increased activity, muscle strengthening, and screening for other health issues.