Fitness curves meaning

[Aleksandra_Mishanova]

Hey, I am a bit confused about the curves. So green range for Form is where I should be aiming to get to? Why the numbers are negative there? And what exactly does the gray area mean?
Thank you in advance!

[R2Tom]

Start reading the Guide section

FITNESS PAGE - a guide to getting started

The Fitness page. [Fitness page icon] The Fitness page is without a doubt one of the most important pages because it gives you an immediate overview of the result from everything you’ve done in the past and, everything you’ve planned for the future. The Fitness and Form charts are the heart of the page and if you come from another software suite, you may know them as the PMC (Performance Management Chart). The terms Fitness/Fatigue/Form are used iso of the trademarked CTL/ATL/TSB ™. The idea a…

[Aleksandra_Mishanova]

Thanks!