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              Mark Ricaud,Joyce HannaThis group of older runners meets weekly at the Stanford University track. Known as the "Angel Field Ancients," some are in their 80s.Mark Ricaud is 80 years old and has be...

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              Walter Bortz 博士是一位長壽專家,他說有規(guī)律的運(yùn)動是老年健康的關(guān)鍵。Walter BortzA group of more than 300 runners over the age of 50 were tracked by Stanford University researchers starting in 1984...

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