What would a person need to do in terms of caloric input and output to lose weight.

A person who aims to lose weight should take in less amount of calories. Take note that most food indicates this amount in the packaging. Similarly, he also needs to loss the calories he has taken in. For those who wanted to gain weight, increase the caloric input.

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Describe what a person would need to do in terms of caloric input and output to: lose weight: gain weight -