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The cognitive challenges of walking while texting are well known, both to scientists and to those of us who have ambled into a light pole or a fellow pedestrian or have been on the receiving end of someone else's distracted movements. Strolling while talking on the phone — or, more particular, texting — ties up the brain's relatively limited working attentional resources, most researchers would agree, much as those activities do when you are driving. 边走边发短信会带来认知挑战，这一点不仅仅为科学家，也为那些曾经一头撞上电线杆或者别的路人，或者曾被走神的人撞上的人来说所熟知。边走边使用电话——或者更具体地说，发短信——涉及到的工作记忆资源相对有限，至少不会超过你开车时发短信涉及的大脑资源，对此大部分研究人员都认同。 But walking is not driving. In some ways, it's more demanding. You sit while you drive. Walking requires a multitude of orchestrated actions and reactions. But whether and how using a phone affects the physical process of walking and whether those impacts might have health costs have been little explored. 但走路跟开车不同。在某种角度来说，它提出的要求更高。开车时你是坐着的，而走路需要多种行为和反应协调一致。不过，用手机是否或如何影响走路这种生理过程，以及这种影响是否会产生健康损害，这些还甚少得到研究。 | 
