How it could work is usually that it places force over the neck, which is not comfortable and can make another person sit back and make improvements to their posture. Straighten your back and spot the higher pony on your back. But bad posture goes past terrible seems to be, http://cristianlwgio.mybjjblog.com/dr-posture-corrector-10-adjustable-posture-corrector-correct-your-posture-13092005