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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The cause of lower back pain may be one of these factors such as muscle strain, poor posture, lack of exercise or movement, and depression.

事业的下背痛可能是其中的一个因素，如肌肉拉伤，可怜的姿势，缺乏运动或运动，和抑郁症。

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Because if you strain a muscle or hurt your back, then you won't be able to exercise for a couple weeks. Right?

因为如果你拉伤肌肉或伤了背部，之后几周都没法运动了，对不对？

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David Wright, third baseman for the New York Mets, was recently diagnosed by his physicians with left sided intercostal muscle strain, after he was complaining of a sore back last week while at the World Baseball Classic.

FORBES: Could Intercostal Strain Affect David Wright's Opening Day?

England are already without Tim Bresnan , who returned early with a calf strain, although Stuart Broad is back in the squad after missing three Ashes Tests with a stomach muscle injury.

BBC: Injured Graeme Swann to miss England ODIs in Australia