1. What Is BMR For Weight Gain?

Basal Metabolic Rate (BMR) represents the number of calories your body needs at complete rest to maintain basic physiological functions. For weight gain, knowing your BMR helps determine your total daily calorie needs.

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: This 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 is essential for creating an effective weight gain plan. It serves as the foundation for calculating your total daily energy expenditure (TDEE) when combined with your activity level.

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 in the morning before eating and after using the bathroom.

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: How many calories should I add to gain weight?
A: For steady weight gain, add 250-500 calories to your TDEE. This should result in 0.25-0.5 kg gain per week.

Q3: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue, so those with more muscle mass typically have higher BMRs.

Q4: How often should I recalculate my BMR?
A: Recalculate after significant weight changes (5+ kg) or every 3-6 months as your body composition changes.

Q5: Is this equation accurate for athletes?
A: While reasonably accurate, very muscular individuals may underestimate calorie needs, while very lean individuals may overestimate.