A theory called the "Healthy Worker Effect" supposes that when someone performs a repetitive task for a long time, like lifting heavy boxes or surfing the Web, the person can develop a resistance to problems associated with the activity. The effect may be developmental, according to Harwood, in that children could develop a body structure to handle more ergonomic stress than they would have if they started the task as an adult.
Kids nowadays can spend hours cradling a cell phone with a crooked neck, slumping over a computer game, slouching in front of a PC while text messaging friends and listening to music. And that's on top of time they might spend in school on a PC surfing the Web to research topics and do homework.
Source: News.com
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