A man went on a 10-day vacation. His total metabolic rate...

A man went on a 10-day vacation. His total metabolic rate was 2600 calories a day. His total calorie intake was 3300 calories a day. He began the trip weighing 178 pounds. What did he weigh when he got back from vacation? ( 3500 excess calories $=$ 1 pound)

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Key Concepts

Basal Metabolic Rate

This is the amount of energy, measured in calories, that a person burns at rest over a given period of time. It represents the baseline energy expenditure necessary to maintain essential bodily functions, and helps determine how many calories one needs to consume to maintain, gain, or lose weight.

Caloric Intake

This refers to the total number of calories consumed through food and beverages in a day. It is a key factor in energy balance, as it provides the necessary fuel for bodily activities and, when compared to energy expenditure, determines whether surplus or deficit conditions exist.

Caloric Surplus and Deficit

This concept involves the balance between the calories consumed and the calories expended. A caloric surplus occurs when intake exceeds expenditure, leading to weight gain, while a deficit (expenditure exceeds intake) results in weight loss. Understanding this balance is fundamental in nutrition and weight management.

Energy Conversion in Weight Change

This concept relates to the rule of thumb that a specific amount of excess or deficit calories is equivalent to a certain amount of body weight change. Commonly, it is said that approximately 3500 calories equate to one pound of body weight. This conversion factor is used to estimate weight gain or loss from a given caloric imbalance over time.

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