When you sign up for the base fitness plan, your Critical Power may drop. It depends on a few things:
1. CP will go down once old runs are no longer considered after 90 days. If your base plan is shorter, CP will likely remain the same.
2. If you do a 90+ day base fitness plan, and have no races or time trials during that time (which are not part of the plan), your CP may drop.
For additional information, please contact firstname.lastname@example.org.