1. What is TDEE Based on Lean Body Mass?

This calculator estimates Total Daily Energy Expenditure (TDEE) specifically for men using their Lean Body Mass (LBM). Unlike traditional TDEE calculators that use total body weight, this approach focuses on metabolically active tissue for potentially more accurate results.

2. How Does the Calculator Work?

The calculator uses these equations:

Where:

• \( BMR \) — Basal Metabolic Rate (kcal/day)
• \( LBM \) — Lean Body Mass in kg
• \( activity\_factor \) — Multiplier based on activity level

Explanation: The equation first calculates BMR based on LBM, then adjusts for physical activity level to estimate total daily calorie needs.

3. Importance of TDEE Calculation

Details: Knowing your TDEE helps in weight management - consuming less leads to weight loss, consuming more leads to weight gain. The LBM-based approach may be more accurate for muscular individuals.

4. Using the Calculator

Tips: Enter your lean body mass in kg (from body composition measurements) and select your activity level. For best results, use accurate LBM measurements from DEXA scans, BIA, or skinfold calipers.

5. Frequently Asked Questions (FAQ)

Q1: Why use LBM instead of total weight?
A: Fat tissue is less metabolically active than muscle. Using LBM may provide more accurate estimates for muscular or overweight individuals.

Q2: How do I measure my LBM?
A: Methods include DEXA scans (most accurate), bioelectrical impedance analysis (BIA), or skinfold measurements. Some smart scales estimate LBM.

Q3: What activity factor should I choose?
A: Be honest about your activity level. "Sedentary" means little to no exercise, "Lightly Active" means light exercise 1-3 days/week, etc.

Q4: Is this calculator only for men?
A: Yes, this specific equation is designed for men. Women may need different coefficients.

Q5: How often should I recalculate my TDEE?
A: Recalculate whenever your LBM changes significantly (≥2kg) or your activity level changes substantially.