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.