Lower back pain in desk workers is primarily caused by sustained lumbar compression, hip flexor tightening, and glute inhibition from prolonged sitting - all of which are correctable with a consistent daily movement routine.
Hip flexor pain when sitting is discomfort or tightness in the muscles at the front of the hip that occurs when these muscles become shortened, overloaded, or inflamed from sustained seated positions.
Wall angels are a posture correction exercise where the spine is pressed flat against a wall and the arms slide through a V-to-W arc, actively retraining the upper back, shoulder stabilizers, and thoracic spine to hold better alignment.
You can genuinely improve your posture in 30 days - if you follow the right sequence of stretching, strengthening, and daily habit changes. Most people fail not because posture correction is hard, but because they use generic exercises without understanding their posture.
If you spend most of your day at a desk, your posture is quietly working against you. The chair, the screen, the keyboard - they all push your body into the same forward-flexed position for hours at a time.