The narrator of the poem is a woman who observes the female racehorses with deep admiration. She identifies with their physical strength, speed, and gender, imagining that she physically harbors a giant, powerful eight-pound female horse heart within her own body. She speaks with a bold, conspiratorial tone, eager to embrace her innate confidence and share it with others.

These female racehorses compete in high-stakes environments, possessing the ability to run forty miles per hour while making the immense physical effort look as easy as taking a nap. They embody a unique blend of raw animal strength and graceful social conditioning, maintaining a composed presence even during extreme exertion.

The silent audience of the poem to whom the speaker directs her intimate, advice-like confessions. The speaker challenges this audience to believe in her power and physically verify the existence of her metaphorical horse heart.