Preserve the woman’s exact facial identity, facial features, body shape and body proportions from the reference image throughout the entire video. Her physique must remain completely unchanged. She has a natural feminine, softly toned body — not muscular and not highly defined. She slowly lowers her arms from the previous stretch and returns to a relaxed upright standing position. She then calmly places one foot a small step forward while keeping both feet on the ground. The front leg is comfortably extended with the heel on the ground and the toes slightly raised. She gently shifts her hips backward and makes only a small forward hinge from the hips, creating a relaxed standing hamstring stretch. Her back remains naturally straight. She does not bend deeply. Her arms stay low and relaxed. She lightly rests her hands on her thighs for natural support. No large arm movements. Throughout the entire movement she remains focused on the stretch and looks naturally just past the camera. She never looks directly into the lens and does not pose or smile for the camera. Her head and facial orientation remain almost unchanged from the reference image. Only subtle natural breathing, one soft blink and tiny realistic balance adjustments. Keep her shoulders soft, arms naturally slim, abdomen smooth with only subtle definition, waist unchanged, hips and thighs exactly the same size and shape as in the reference image. Preserve the exact denim-blue high ponytail, light-blue sports top, black leggings, skin tone, outdoor location, lighting, framing and camera position. Maximum facial identity and body consistency are the priority. No facial morphing, no identity change, no increased muscle definition, no defined abs, no muscular shoulders, no enlarged arms, no enlarged thighs, no body transformation, no deep forward bend, no leg deformation, no extra limbs or fingers, no sudden movement, no camera movement, no zoom. Photorealistic, subtle, relaxed, feminine and natural stretching movement.