参加过150余场马拉松赛的资深跑步教练马克·苏利凡(Mark Sullivan)说：“我一点儿也不担心。”他还开玩笑称：“有人又抽烟又吃芝士汉堡还能活到100岁呢。”

'I'm not worried,' says veteran running coach Mark Sullivan, who has run more than 150 marathons, joking that 'there are guys who live to be 100 smoking cigarettes and eating cheeseburgers.

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