lowing.\rFirst, it is absolutely necessary to take some exercise every day.\rResearch shows that getting plenty of exercise make the heart beat faster\rand the lungs work harder. This strengthens the heart, reduces the chance\rof heart attack, and helps lower blood pressure. That's why more and more\rpeople are becoming active in various kinds of sports and exercises.\rSecond, it has been proved by medical researchers that what people eat\raffects their health. They advise people to eat more fruit and vegetables\rand less meat such as beef and pork because meat contains more fat than\rpoultry and fish. Fat can build up in the arteries, block the flow of blood,\rand cause a heart attack or stroke.\rIf people follow these three ways of keeping fit, they greatly improve\rtheir health.
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