High-intensity workouts differ from moderate-intensity workouts mainly in their effort level and energy expenditure. High-intensity intervals typically involve short bursts of maximum effort followed by brief recovery periods, boosting cardiovascular fitness and promoting fat loss. Conversely, moderate-intensity workouts allow for sustained activity at a lower, more manageable effort, suitable for longer durations. Both types of training have their advantages; high-intensity efforts yield quicker improvements in fitness and metabolism, while moderate-intensity exercises are more accessible, promoting consistency and long-term adherence to an exercise program.