Young woman with red braid doing core exercise on yoga mat AI Image Prompt

A young woman with fair skin and vibrant long {argument name="hair color" default="red"} hair styled in a {argument name="hairstyle" default="single braid"} resting over her right shoulder is sitting on an {argument name="mat color" default="orange"} ribbed yoga mat in a fitness studio. She is performing a core exercise pose, balancing with her torso slightly leaned back, both legs bent and lifted off the mat with bare feet pointing forward, and both arms raised straight up high above her head with palms open and facing forward. She wears a fitted black short-sleeve athletic t-shirt and blue full-length leggings, and she has a bright, genuine smile showing her teeth while looking directly at the viewer. The studio background features white floor-to-ceiling curtains, a dark smooth floor, a long red padded bench to the left side, and black rectangular storage boxes or equipment to the right side. The lighting is bright and even, creating a clean, modern fitness environment with a positive, energetic atmosphere. High detail, realistic photography style, full body visible from head to feet.