大学体验英语综合教程第三版2unit6.docx

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Physical activity improves our bodies' health. A recent study published in The New England Journal of Medicine, suggests that maintaining a healthy level of physical fitness through exercise can help people live longer; and the findings also provide updated support to Charles Darwin's "survival of the fittest" theory. But repetitive exercise can e boring, leading to discouragement, frustration, even quitting. Selecting an activity that provides enjoyment as well as physical exercise, however, can be the answer. Many people have turned to sports. Sports can provide a challenge physically as well as mentally - and increase one's physical activity while providing social interaction, a sense of plishment and enjoyment.
First held as part of the 1896 Olympics in Athens, Greece, and then brought to Boston, Massachusetts in 1897, the Marathon is now an important part of culture in many cities across America. Marathon running, usually a 40k ( miles) race, is ing increasingly popular with both men and women for its challenge of perseverance, requiring both physical and mental endurance, and its feat of plishment. For first-time runners it is the culmination of a dream - a personal goal obtained after months of physical and psychological preparation and training. For veteran marathoners it's an opportunity to improve their Personal Best - competing against their own