Serious eye strain can lead to persistent headaches, muscle pain in the head, neck and upper back, as well as long term problems like myopia.

严重的眼疲劳会导致长期的头痛，头部，颈部和上发背的肌肉疼痛，也可能会引起一个长期的问题近视。

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Police target body or legs to avoid vulnerable areas such as head and neck. Without muscle control, people fall to the ground.

警察避开头、脖子之类的要害瞄准躯干、大腿，没有肌肉控制，人们就倒在地上。

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Tension headache (the most common type) is caused by muscle tension in the head, neck, and shoulders.

紧张性头痛(最常见的一种)是由头部、颈部和肩部的肌肉紧张引起的。

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For years, researchers blamed muscle tension from tightening in the face, neck and the skin on top of the head.

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New York also remained without center Tyson Chandler, bothered by a strained neck muscle, and forward Amare Stoudemire, who recently underwent knee surgery.

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As most of us spend more time using tablet devices such as an ipad or laptop computers, the risk for developing neck pain and muscle strain in the upper shoulders increases.

FORBES: Five Tips to Reduce Neck and Shoulder Pain When Using a Tablet or Computer

Holding the tablet or computer too low, especially on your lap if you are sitting on your bed or a couch, can flex your neck forward leading to potential muscle strain.

FORBES: Five Tips to Reduce Neck and Shoulder Pain When Using a Tablet or Computer