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During the 1930s people carried out more physical activities as there was less means of transport and most of the jobs they had also asked for a lot of movement. Because of this they had to eat more food and have a higher intake of energy. In the 1980s cars had been developed and less physical activities were being carried out so naturally the amount of energy needed decraesed as they were burning less.

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What happens to body weight if energy expenditure is intake equal?

Body weight decrease if energy intake and expecture is the same due to the internal body metabolism .


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Weight is determined by the balance between energy intake and energy expenditure. When energy intake exceeds expenditure, the excess energy is stored as fat, leading to weight gain. On the other hand, if energy expenditure exceeds intake, the body uses stored energy reserves, resulting in weight loss. Maintaining a balance between energy intake and expenditure is crucial for weight management.


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This statement is incorrect. When energy balance in the body is positive (caloric intake exceeds caloric expenditure), body mass increases. To decrease body mass, energy balance must be negative (caloric intake is less than caloric expenditure).


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The primary reason elderly people should decrease their caloric intake is that?

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