A posture alignment system improves posture by posture modification and spinal alignment. A back plate for positioning along a user's back provides a rigid structural foundation from approximately the user's head down vertically to at least to the user's hip region. A separation plate hingedly couples to the posture alignment system. A spinal mold 20 mechanism includes a spinal mold 20 positioned on the spinal mold 20 plate and has a length equal to at least approximately the length of the user's spine for interfacing and providing posture modifying support and alignment force to the user's spine. The spinal mold 20 includes posture alignment guide rails for guiding posture modification and spinal alignment according to a posture alignment goal. A pneumatic force generating mechanism controllably generates pneumatic force for forcibly and controllably interfacing the spinal mold 20 mechanism and the neck aligning mechanism with the user's spine and neck, and, thereby guide posture modification and spinal alignment of the user according to the posture alignment goal.
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