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Andrew Menechian is Head of Fitness at FitCommit and Founder & CEO of Peak Performance, a Sydney-based coaching practice for busy professionals. He has 12+ years in the fitness industry and has mentored 100+ personal trainers through education roles at The Fitness Playground and Clean Health Fitness Institute. He is the 2015 IFBB Australasian Men's Physique champion and unofficially broke the under 90kg RAW Australian Deadlift mark of 320 kg at 89 kg bodyweight.
Andrew is the architect of the macro calculation framework used across FitCommit's tools and content. The framework is built on the Katch-McArdle BMR formula, which accounts for lean body mass rather than total body weight, and uses sliding scales for calorie deficit, calorie surplus, protein, and fat that adjust to the individual rather than applying one fixed number to everyone.
As FitCommit's Head of Fitness, Andrew owns the macro and nutrition framework that powers FitCommit's calculators and is the sign-off authority for fitness methodology. Before founding Peak Performance, he was Head Coach at Clean Health Fitness Institute and Education Manager at The Fitness Playground, where he ran trainer workshops on training, nutrition, and coaching.
Andrew reviews FitCommit fitness methodology for calorie targets, macro targets, protein ranges, body-composition guidance, and practical coaching language. His review focus is whether the advice is useful for real training decisions, aligned with evidence, and clear about where an estimate stops.
FitCommit content is not medical advice. Topics involving diagnosis, medication, pregnancy, eating disorders, or clinical nutrition require qualified medical review before being treated as health guidance.
Public records are linked where reliable source pages exist. Older bodybuilding, CAPO, and coursework records that are not cleanly indexed online are listed from Andrew's supplied credential record.
BMR Formula
Katch-McArdle: 370 + (21.6 x lean mass in kg). Lean mass estimated from body fat percentage rather than total body weight.
Cutting Deficit
Sliding scale from 15% (Gentle) to 40% (Very Aggressive) below TDEE. Default 25% (Recommended). Larger deficits suit higher body fat; smaller deficits protect lean mass at lower body fat.
Cutting Protein
Sliding scale 2.3g to 3.1g per kg lean mass, scaled to deficit size. Higher protein at aggressive deficits and for leaner individuals to minimise muscle loss.
Bulking Surplus
Sliding scale 5% (Lean Gain) to 15% (Aggressive) above TDEE. Default 10% (Normal). Protein 2.3g per kg lean mass.
Fat Targets
Cutting: 25% to 30% of calories, scaled by deficit. Bulking and maintenance: 25% fixed for hormonal support. Carbs fill the remainder, minimum 50g.
Fat Safety Floor
Floor = max(0.5g per kg body weight, 20% of calories). Protects testosterone, joint health, and overall hormonal function during aggressive deficits.
Macro Calculator: Protein, Carbs and Fat by Weight and Goal
420 pages covering cutting, bulking, and maintenance macros for men and women from 130 to 260 lbs.
Cutting Guide
Deficit strategy, protein targets, and muscle preservation for a successful cut.
Lean Bulk Calculator
Surplus targets, lean bulk vs dirty bulk, and protein timing for muscle gain.
Calories Per Day by Sex, Age and Activity Level
Calorie targets based on TDEE, covering every activity level and common age groups.
Body Fat Measurement Methods Compared
DEXA, InBody, Bod Pod, calipers, Navy method, and AI body scan rated by accuracy, cost, and convenience. Reviewed accuracy claims against peer-reviewed sources.





