1. What is Energy Expenditure?

Total energy expenditure represents the number of calories your body burns in a day, calculated by multiplying your Basal Metabolic Rate (BMR) by an activity factor that accounts for your daily physical activity level.

2. How Does the Calculator Work?

The calculator uses the energy expenditure equation:

Where:

• \( BMR \) — Basal Metabolic Rate (calories burned at rest)
• \( Activity\ Factor \) — Multiplier based on activity level (1.2-1.9)

Explanation: The equation accounts for both your body's basic energy needs (BMR) and additional calories burned through physical activity.

3. Importance of Energy Expenditure Calculation

Details: Knowing your total energy expenditure helps with weight management, nutrition planning, and fitness goals by determining how many calories you burn daily.

4. Using the Calculator

Tips: Enter your BMR in kcal/day and select your activity level. The activity factor ranges from 1.2 (sedentary) to 1.9 (extremely active).

5. Frequently Asked Questions (FAQ)

Q1: How do I determine my BMR?
A: BMR can be calculated using equations like Harris-Benedict or Mifflin-St Jeor, which consider age, gender, weight, and height.

Q2: What activity factor should I choose?
A: Select based on your daily activity: 1.2 (little/no exercise), 1.375 (light exercise 1-3 days/week), 1.55 (moderate exercise 3-5 days/week), 1.725 (hard exercise 6-7 days/week), 1.9 (very hard exercise + physical job).

Q3: How accurate is this calculation?
A: It provides a good estimate but individual variations exist. For precise measurements, consider professional metabolic testing.

Q4: Should I adjust my calorie intake based on this?
A: For weight maintenance, consume calories equal to your expenditure. For weight loss, consume fewer calories than you burn.

Q5: Does this account for exercise calories?
A: The activity factor includes general physical activity. For specific exercise tracking, additional calculations may be needed.