A handsome masculine man as a Xiaohongshu fitness influencer

Prompt

A handsome masculine man as a Xiaohongshu fitness influencer, standing in profile with left arm raised behind head and elbow bent while gripping a black wristband near neck. He wears a grey sleeveless tank top covering torso and back paired with dark grey textured shorts. Defined back muscles and veins on arms are captured by soft directional indoor lighting against plain light-colored walls. Vertical portrait crop from mid-thighs to upper chest, clean composition focusing on musculature and posture in an aspirational lifestyle mood., wearing underwear or swim trunks, covered genitals, no frontal nudity, a single uninterrupted photograph only, no written words or typography anywhere in frame, no captions, no app UI, no social-media post layout, no screenshot borders