What training aspect often directly impacts a racehorse's competitive edge?

The horse's nutrition plays a crucial role in determining its competitive edge in racing. Proper nutrition ensures that the horse receives the necessary energy, vitamins, and minerals to perform optimally during training and races. A well-balanced diet contributes to the horse's physical condition, stamina, strength, and overall health. When racehorses are fed a diet tailored to their specific needs, they can recover more quickly from workouts, maintain better muscle tone, and reduce the risk of injuries.

In contrast, factors such as the age of the trainer, the breed of the horse, or the horse's coloration do not have a direct physiological impact on the horse's performance capabilities in the same way nutrition does. While experienced trainers can assess and implement effective training techniques, the immediate influence of nutrition on a racehorse's ability to compete at a high level remains fundamental to its success on the racetrack.