Biomechanical Fitness Instructional Chart

Generate a monochrome grayscale technical illustration, a biomechanically accurate fitness instruction chart, a clean 3D anatomical figure, scientific-diagram aesthetics, minimalist style, no artistic exaggeration 2x4 grid layout (8 panels total), perfectly aligned cells, equal spacing, thin black borders, numbered 1 through 8 A neutral athletic body (gender-neutral), anatomically proportioned, with a consistent figure across all panels {argument name="training exercise" default="dumbbell training"} sequence (key positions only): 1. Dumbbell curl (starting position) 2. Dumbbell curl (top contraction) 3. Shoulder press (starting at shoulder height) 4. Shoulder press (locked overhead) 5. Dumbbell lateral raise (arms down) 6. Lateral raise (arms at shoulder height) 7. Dumbbell squat (standing start) 8. Squat (bottom position) Top-left corner: bold number + exercise name (in Chinese) Center: full-body pose (clear joint positions) Bottom-left corner: brief technical notes (2–3 lines, correct posture cues) Overlay: directional arrows showing the movement path (up/down/arc) Correct joint alignment, neutral spine, proper elbow and knee positioning, realistic weight distribution, no exaggerated movement Highly detailed grayscale shading, soft studio lighting, subtle shadows, clean lines, medical/sports-science diagram quality Pure white background No color, no background environment, no extra elements, no stylization, no blur