#### key ratios - waist-to-shoulder ratio: 0.618 (golden ratio) - body fat: 8-12% (visible abs while maintaining health) - muscle mass: 40-50% of total body weight #### specific measurements (for 5'10" male) - shoulders: 51-52 inches - waist: 30-32 inches - chest: 44-46 inches - arms: 16-17 inches flexed - thighs: 23-25 inches - calves: 16-17 inches #### body composition targets - subcutaneous fat: 6-9% (what you see in the image is too high at 12-14%) - visceral fat: < 10% (critical for health) - skeletal muscle: > 45% #fitness #bodybuilding #health remember: - these are reference points, not rigid rules - genetics play a huge role - health should always come first - consistency > perfection like a greek statue, the ideal is about proportions rather than absolute size. think of it as architectural harmony for the human form 🏛️