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🏋️ Functional Fitness Simulation

Watch a simplified skeletal rig perform squats, lunges and carries with live joint-force vectors, power output and estimated one-rep max as you change load and tempo.

Sports Physics & Biomechanics3DEasy60 FPS

⚙ Under the hood

Watch a simplified capsule skeleton perform a squat-to-press, lunge or loaded carry with live joint-force vectors, power output and estimated one-rep max updating as you change load and tempo.

Three.jsSports ScienceBiomechanicsStrength Training

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install