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Scientists studied more than 1,000 healthy joggers and non-joggers over a 12-year period. 科学家们对1000多名身体健康的慢跑者和不跑步的人进行研究，追踪时间超过12年。 Those who jogged at a steady pace for less than two and a half hours a week were least likely to die in this time. 慢跑速度较为稳健，且每周慢跑时间不超过两个半小时的人猝死的可能性最小。 But those who ran more than four hours a week or did no exercise had the highest death rates. 而一周跑4个小时以上或者从不锻炼的人则有着最高的死亡率。 | 
