Photorealistic image, full body shot. A dynamic, high-energy Zumba blonde trainer, drenched in sweat, performs a vigorous and dynamic dance routine in a gritty urban gym. She's mid-motion, captured at the peak of a high-energy move, with her body contorted in a powerful pose – perhaps a jump, a twist, or a powerful arm extension. She wears a skin-tight, sweat-soaked tank top and short skin-tight shorts, revealing light sweat stains, especially prominent under the arms and along her back. Her expression is one of joyful exertion, a wide smile with slightly parted lips and focused eyes. She has prominent cheekbones and an upturned nose with a rounded tip. Show her shoes, hands, and full body. Focus on capturing the motion blur of her limbs and hair to emphasize the speed and energy of the dance. The gym should be slightly blurred in the background to further emphasize the subject.