哪吒机器人提醒：
提醒：Back of the Pack
【标题】The rewards and risks of extreme exercise
【摘要】it's rare that someone dies running a marathon or half marathon. extraordinarily rare when three people die. yet that's what happened in detroit, sunday, oct. 18, 2009.within 16 minutes, three men collapsed and died while running the half marathon in detroit. all had trained to do the event and – according to news reports all were relatively healthy.emergency medical staff were on hand quickly for each man, but none could be saved.it's a tragedy but unfortunately it happens. people who sign u... (04-09 14:49)
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