1. What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. It represents the minimum energy required to keep your body functioning, including breathing, circulation, and cell production.

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
• \( gender\_factor \) — +5 for men, -161 for women

Explanation: The equation accounts for differences in body composition and metabolic rates between genders and across different ages.

3. Importance of BMR Calculation

Details: Knowing your BMR helps in weight management, determining daily calorie needs, and creating personalized diet plans for weight loss or gain.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, and select your gender. For accurate results, measure your weight and height precisely.

5. Frequently Asked Questions (FAQ)

Q1: Why is BMR different for men and women?
A: Men typically have more muscle mass and less body fat than women, resulting in a higher metabolic rate.

Q2: How accurate is this BMR calculation?
A: The Mifflin-St Jeor Equation is about 90% accurate for most people, though individual variations exist.

Q3: Does BMR change with age?
A: Yes, BMR typically decreases by about 1-2% per decade after age 20 due to loss of muscle mass.

Q4: How can I increase my BMR?
A: Building muscle through strength training can increase your BMR as muscle tissue burns more calories at rest than fat tissue.

Q5: Is BMR the same as daily calorie needs?
A: No, BMR is just the baseline. Total daily energy expenditure (TDEE) includes physical activity and is typically higher than BMR.