Use the attached photo as the reference for the person. Keep her identity exactly as shown, including her face, facial features, skin tone, hair and body type, without retouching that changes who she is. If no photo is attached, use the Subject described below.
Show her taking a candid selfie while walking or jogging on a treadmill in the Gym Setting. Frame the image vertically from a natural arm's-length phone perspective, with the treadmill console and one hand subtly visible in the foreground. Capture a genuine mid-workout moment with light exertion, natural posture and an unposed expression. Keep her sharply in focus while the gym equipment and background fall into a soft, realistic blur. Use flattering ambient gym light, natural skin texture and documentary lifestyle photography with a spontaneous, energetic mood. Preserve believable phone-camera perspective and avoid distorted facial features, limbs or treadmill geometry.
Use these details:
Subject: "woman in her mid-20s"
Gym Setting: "bright modern gym with treadmills, weight machines and soft overhead lighting"
Using your own logo, product or face? Attach it in the chat and say which of the details it replaces.
Your result will come out close to the example rather than identical to it. Change the details to make it yours.