Samia is tracking the amount of calories she consumes each day, along with her amount of exercise. She also takes her basal metabolic rate into consideration, which is 1,680 calories per day. At the end of the first day, she has consumed 1,940 calories in food and beverages and burned 280 calories on a six-mile bike ride, making her calories almost equal for the day (20 more calories out vs. in).

What will most likely be the outcome if Samia continues this pattern for multiple weeks?

A. She will gain significant weight.
B. She will lose significant weight.
C. Her weight will stay about the same.
D. Her weight will shift up and down.



Answer :

Let's carefully analyze Samia's caloric balance to determine the likely outcome if she continues her current pattern for multiple weeks.

1. Basal Metabolic Rate (BMR):
- This is the number of calories her body burns just to maintain basic physiological functions while at rest.
- Samia’s BMR is 1,680 calories per day.

2. Calories Consumed:
- These are the calories she intakes through food and beverages.
- On the first day, she consumed 1,940 calories.

3. Calories Burned:
- These are the additional calories she burns through physical activities such as exercises.
- On the first day, she burned 280 calories from a six-mile bike ride.

4. Net Calories Input (Calories Consumed):
- This is simply the amount of calories she took in.
- [tex]\( \text{Net Calories In} = 1,940 \)[/tex] calories.

5. Net Calories Output:
- This is the sum of her BMR and the calories she burned through physical activity.
- [tex]\( \text{Net Calories Out} = \text{BMR} + \text{Calories Burned} = 1680 + 280 = 1,960 \)[/tex] calories.

6. Caloric Balance:
- This is the difference between the net calories consumed and the net calories burned.
- [tex]\( \text{Caloric Balance} = \text{Net Calories In} - \text{Net Calories Out} = 1,940 - 1,960 = -20 \)[/tex] calories.

From this analysis, the caloric balance is -20 calories. This means Samia is burning 20 more calories than she is consuming each day.

If Samia continues this pattern for multiple weeks, she will be in a consistent calorie deficit. Over time, this consistent deficit will likely lead to weight loss. Therefore, the most appropriate outcome, if Samia maintains this pattern, would be:

She will lose significant weight.

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