Natural Plank Selfie on a Yoga Mat at Home

Capture a candid fitness selfie of the person holding a strong plank on the Yoga Mat in the Room. Use a low, front-facing smartphone perspective at mat level, as if the phone has been propped nearby during a real home workout. Show her full body in a natural horizontal plank with straight alignment from shoulders to heels, realistic weight distribution and focused but relaxed expression. Dress her in the Outfit. Let the living room feel authentic and slightly lived in rather than staged, with soft daylight coming through a nearby window and gentle natural shadows across the floor. Use a casual handheld-selfie feeling, subtle wide-angle perspective, realistic skin texture and natural color. Keep the image candid, warm and believable, with enough background context to clearly read as a home workout scene.

Use these details:
Person: "woman in her early 20s with a natural, athletic appearance"
Room: "bright, lived-in home living room with a sofa, coffee table and a few plants"
Yoga Mat: "sage green yoga mat"
Outfit: "black fitted athletic top and charcoal leggings"