1. What is Basal Metabolic Rate (BMR)?

BMR represents the number of calories your body needs to maintain basic physiological functions at rest, such as breathing, circulation, and cell production. It accounts for about 60-70% of your total daily energy expenditure.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor Equation:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in centimeters
• \( age \) — Age in years
• \( +5 \) — Added for males
• \( -161 \) — Subtracted for females

Explanation: The equation accounts for differences in body composition between genders and the natural decline in metabolism with age.

3. Importance of BMR Calculation

Details: Knowing your BMR helps determine your daily calorie needs for weight maintenance, loss, or gain. It serves as the foundation for creating personalized nutrition plans.

4. Using the Calculator

Tips: For accurate results, measure your weight and height precisely. Input your current age. Select your biological sex as the calculation differs between males and females.

5. Frequently Asked Questions (FAQ)

Q1: How does BMR differ from TDEE?
A: BMR is calories burned at complete rest, while TDEE (Total Daily Energy Expenditure) includes all daily activities and exercise.

Q2: What factors affect BMR?
A: Muscle mass, age, genetics, hormones, body size, and environmental temperature all influence BMR.

Q3: How often should I recalculate my BMR?
A: Recalculate after significant weight changes (5+ kg) or annually as you age.

Q4: Can I increase my BMR?
A: Yes, through strength training to build muscle, proper nutrition, and adequate sleep.

Q5: Is this equation accurate for athletes?
A: It provides a reasonable estimate, but athletes with high muscle mass may need more specialized assessments.