How does one measure improvement in an exercise regimen effectively according to the described approach?

Measuring improvement in an exercise regimen effectively involves noting exercise difficulty. This approach focuses on the actual challenges and intensity of workouts, which can indicate enhancements in strength, endurance, or overall fitness levels. As a person's fitness improves, they will find that activities which were once difficult become easier, allowing for the possibility to increase the weight lifted, the number of repetitions performed, or the intensity of cardiovascular exercises.

Additionally, tracking changes in perceived difficulty during workouts can provide valuable insight into the effectiveness of the training program and whether adaptations are occurring. By focusing on how challenging exercises feel over time, individuals can gain a more accurate understanding of their progress rather than relying solely on other metrics such as duration or frequency, which might not thoroughly capture the benefits of their training.