Setting benchmarks in fitness training is significant as it provides measurable milestones that guide progress. These benchmarks can include specific goals like increasing weight lifted, improving running speed, or completing workouts within a certain timeframe. Having clear benchmarks helps individuals evaluate their performance and stay motivated throughout their fitness journey. It allows for adjustments to be made in training regimens and fosters a sense of achievement as each goal is reached. This structured approach also cultivates a growth mindset, encouraging continuous improvement and commitment to long-term fitness success.