Woman in orange tank top doing cardio workout on treads in gym

Capture the infectious positivity of a personal trainer in a gym, as she enthusiastically showcases the vibrant orange screen of her smartphone towards the camera. Depict the trainer's genuine happiness and energy, creating an engaging and inviting atmosphere. Utilize lighting to emphasize her cheerful expression and the dynamic colors. Ensure the smartphone's screen is prominently displayed, emanating a warm orange hue and perhaps featuring fitness-related content. This image should radiate the trainer's enthusiasm and expertise, encouraging viewers to feel excited about fitness and the guidance she offers.