As you stand, maintain the natural curve in your lower back and keep your core muscles tight. Use your leg muscles - not your back - to lift the object.
在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。用你的腿部肌肉——不是背部——去抬起物品。
As you stand, maintain the natural curve in your lower back and keep your core muscles tight.
在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。
As you stand, maintain the natural curve in your lower back and keep your core muscles tight.
在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。
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