The study of the relationships between activity patterns and mortality is known as:

The study of the relationships between activity patterns and mortality is known as: exercise epidemiology.
According the exercise epidemiology study the lack of engagement in physical activity is one of the principal threats to the health of populations.
Physical activity leads to body composition, cardiorespiratory endurance, flexibility, muscular endurance, muscular strength and improves the health.

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Accumulating more land so that your country can continue expanding without running into problems such as overpopulation