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Auth­ors of a new stu­dy, pub­lished in the Jour­nal of the Amer­i­can Med­i­cal As­socia­t­ion, noted that old­er peo­ple with bet­ter cardio-respiratory fit­ness ap­pear to live long­er than un­fit ones. Better cardio-respiratory fitness can be linked directly to

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Answer:

Regular, frequent exercise

Step-by-step explanation:

User Jamesqiu
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regular, frequent exercise.
User Philar
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