Whatever the cause, stress can actually speed up your heart, according to WebMD.

根据WebMD的说法，无论什么原因引起的，压力的确会使你心跳加速。

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Frequent wearers of thongs can suffer foot pain from lack of arch support, tendonitis and sprain ankles from tripping, according to WebMD.

医学网站上说，长期穿戴凉拖的人容易脚疼，因为缺少足弓的支撑；引发肌腱炎也容易崴脚。

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Ketosis is a state in which the body burns its own fat for fuel and can "cause health problems, such as kidney failure, " according to the medical Web site WebMD.

CNN: Mia Farrow ends fast after health concerns