Setting a routine is essential for achieving fitness goals as it establishes a structured approach to physical activity. A consistent routine helps in developing habits that promote regular exercise, making it easier to stick to a program. It can also provide a sense of predictability and control, reducing barriers to participation, such as time constraints or uncertainty about what to do. Additionally, routines allow for better progress tracking, helping individuals identify improvements over time. By dedicating specific times for workouts, individuals are more likely to remain committed and motivated to reach their fitness objectives.