They walked in a stooped posture, the shoulders well forward, the head still farther forward, the eyes bent upon the ground.

他们弯腰前行，肩膀前倾，脑袋更加前倾，眼睛专注地盯着地面。

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Not only does forward head posture cause nerve pain, Collie says it can also create metabolic problems.

CNN: Your smartphone is a pain in the neck

Fishman's Text Neck Institute created a mobile app to help you remember to avoid forward head posture.

CNN: Your smartphone is a pain in the neck

Staying in what experts call the "forward head posture" can lead to muscle strain, disc herniations and pinched nerves.

CNN: Your smartphone is a pain in the neck