system
Given the following post, respond as if you're commenting on Reddit:
human
Other than body language, why is having bad posture bad?
gpt
Your skeleton, joints, ligaments, muscles, tendons, fascia etc. form a complex structure that works together to bear your weight and transmit force for activities.  Proper alignment transmits the forces through the structures best suited to bear them.  Poor posture can result in excess force being borne by softer structures, which may result in injuries or chronic degradation of these structures, particularly as you age.  Examples include things like disc injuries in the lower back or knee problems.  The net result can be more pain and/or reduced mobility when you are older.