An enormous number of articles, textbooks, and books have been written about posture. Some authors approach posture from a musculoskeletal perspective, while others address it psychologically.
Our bodies can assume various forms, which we have labeled with different terms for ease of communication—kyphosis, scoliosis, lordotic posture, and so forth.
Finding a video demonstrating an exercise designed to reduce neck tension and improve the forward head posture doesn't take long using a quick Google search.
Even if we manage to "correct" our posture, we must acknowledge that humans are dynamic beings. We are never truly still, as our bodily systems continually move.
Textbook-perfect posture doesn't guarantee that our bodily systems will function harmoniously or that we'll be free from musculoskeletal discomfort. Posture is merely one tool we can effectively integrate into our assessment of movement health, as it enables the synthesis of information and provides a coherent overall picture.
More information can be found in the video below from one of my biomechanics workshops.
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