I am currently doing the high volume XC MTB plan, however, I have reached the point where the weekly training stress is only just high enough to either maintain or slightly increase my fitness (using Intervals.icu).
Therefore, I am planning on adding volume manually within Systm, and I was wondering what the best way to do this would be? Adding another training plan on top (a low volume base plan possibly?), adding up to an hour a day of extra zone 2 riding, or swapping workouts for their harder counterpart? I am planning on riding around 15 hours a week, and the current Systm XC MTB plans tops out around 10 hours.
I appreciate the help.