Normally, if you overstress a muscle, it gets stronger. But if you have bad posture, causing you to overstress certain back muscle groups, you get back pain. Then the physio gives you exercises to “strengthen” those muscles. How does that work?
In: Biology
If you hunch over you use a different set of muscles than if you use your back muscles to keep your back straight. Not keeping your back straight and depending on the hunched over muscles, will therefore make the muscles straightening your back weaker (by not being used as much as they should)
At least this is my understanding
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