1. What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. For women over 40, metabolism naturally slows down, making BMR calculation crucial for effective weight management.

2. How Does the Calculator Work?

The calculator uses the BMR equation for women:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years (must be 40 or older)

Explanation: This equation estimates the calories needed to maintain basic bodily functions at complete rest, adjusted for the metabolic changes in women over 40.

3. Importance of BMR Calculation

Details: Knowing your BMR helps create personalized weight loss plans. Women over 40 typically need to reduce calorie intake by 200-300 kcal/day compared to their younger years due to metabolic slowdown.

4. Using the Calculator

Tips: Enter weight in kg, height in cm, and age (must be 40+). For accurate results, measure weight in the morning after using the bathroom and before eating.

5. Frequently Asked Questions (FAQ)

Q1: Why is this calculator specific to women over 40?
A: Metabolism slows with age, especially after 40. This equation accounts for the typical metabolic changes in this demographic.

Q2: How often should I recalculate my BMR?
A: Recalculate every 5 years after 40, or whenever you experience significant weight changes (±5kg).

Q3: What's the difference between BMR and TDEE?
A: BMR is calories burned at complete rest. TDEE (Total Daily Energy Expenditure) includes activity and is typically 1.2-1.9 × BMR.

Q4: How accurate is this calculation?
A: It provides a good estimate but may vary ±10% due to individual factors like muscle mass and genetics.

Q5: How should I use my BMR for weight loss?
A: For weight loss, consume 300-500 kcal below your TDEE (which is based on your BMR plus activity level).