在跑步时，您的躯干位置受您头部和双肩位置的影响。

Torso the position of your torso while running is affected by the position of your head and shoulders.

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这也就是说你的脖子和脊柱应该处于中正的位置，肩膀和躯干放松，膝盖弯曲呈90度角，双脚平放在地面上。

This means your neck and spine should be in a neutral position, shoulders and torso relaxed, knees bent at 90 degrees with both feet flat on the floor.

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坐着要求肌肉使躯干、颈部和肩部保持在固定的位置。

Sitting requires the muscles to hold the trunk, neck and shoulders in a fixed position.

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