Classic or ilevels?

[SeeEl]

Ilevels are individual. They are based on the athletes power duration curve. If you want to use them you need wko or the algorithm to work them out and then modify your workouts/plan.

https://www.trainingpeaks.com/blog/individualized-training-the-what-why-and-how-of-the-new-wko4-ilevels/