In a sleek, modern gym flooded with natural light, a sweet potato with endearing, anthropomorphic features runs vigorously on a high-tech treadmill, her face scrunched up in a comedic expression of exhaustion and disdain for physical activity, as beads of perspiration trickle down her tender skin. The vibrant color palette, reminiscent of a children's book, features warm yellows, electric blues, and lime greens, set against a gradient background that transitions from fiery orange to deep plum, with subtle shadows and dramatic highlights achieved through the combined prowess of Unreal Engine, Octane Engine, and V-Ray, evoking the whimsical realism of Pixar animation.