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公园里,晨练的人们常会做着一个动作,就是不停地拍打四肢。一般认为,这也就是活动活动筋骨,其实,它还能起到保护心脏的作用。
People in the morning exercise in the park often do the trick of constantly beating limbs. Generally believed that this is the activities of bones, in fact, it can also play a role in protecting the heart.