Human Body OS
Tool · Free Forever
A 12-week predictive vector model. Tune your daily deficit and protein intake — watch Fat Mass Decay and Lean Retention Velocity move side by side.
Current weight
85 kg
Current body fat
22 %
Daily calorie deficit
500 kcal · Deficit
Daily protein
160 g · 1.88 g/kg
Week 12 projection
The red curve tracks Estimated Fat Mass Decay at 7,700 kcal per kg of adipose tissue. The emerald curve tracks Lean Muscle Retention Velocity — flatter when protein intake clears 1.6 g/kg, sloping upward in a surplus, and falling sharply when protein is low during aggressive deficits. The gap between the two is your real recomposition vector.
SomaOS handles structural biometric modelling — outputs are estimates, not medical diagnostics.