A hyper-realistic photo of a young Korean woman in her early 20s, shown from behind, wearing a form-fitting light gray knit dress. Her full back view is visible down to the knees. She is standing calmly and attentively in front of a large clean whiteboard, slightly tilting her head as if thinking. On the whiteboard, a clean, hand-drawn scientific diagram explaining the Hormesis concept is clearly visible, written only in English. The diagram includes: Title at the top: “Hormesis Concept” A U-shaped curve X-axis labeled “Stimulus Intensity (Low → High)” Y-axis labeled “Biological Response” The peak of the curve labeled “Optimal Zone” Left side text: “Low Intensity – Beneficial Effect / Cell Activation” (green arrow upward) Right side text: “High Intensity – Harmful Effect / Damage & Disease” (red arrow downward) The whiteboard looks realistic, with subtle marker strokes and a few colored markers resting on the tray. Lighting is soft and natural, studio-like, minimal shadows. Background is clean, modern, and uncluttered, educational or research-room atmosphere. Style: photorealistic, DSLR photography, high resolution, sharp focus, natural proportions, no stylization, no text artifacts.

🔧 Optional Negative Prompt no cartoon, no illustration, no anime, no distorted text, no extra people, no logo, no watermark, no exaggerated body proportions, no sexualized pose