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为什么弯腰弯久了，再直起来的时候很费力？（比如洗头）
为什么弯腰弯久了，再直起来的时候很费力？（比如洗头）
2025-03-15 16:32:49
推荐回答（1个）
回答1：
因为弯腰时，脊椎处于挤压状态，而脊椎是有弯曲恢复限度的。弯腰时超过了脊椎快速恢复限度，所以直起来时由于脊椎不能即使复员而很费力。
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