Periodization

In Forecast AI plans, Periodization determines whether your plan builds gradually from today or saves more specific, demanding training for later as your goal approaches. Moving the slider right increases periodization (more training emphasis later), while moving it left reduces periodization (start building immediately).

Summary Generated by AI

Definition

Periodization is the practice of intentionally changing training emphasis over time—so you build fitness efficiently and reduce the risk of overtraining.

In Xert, Periodization controls how your plan shifts from more general training early on to more event-specific training later.

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What It Means

Periodization helps answer:

“Should my hardest, most specific training happen later in the plan—or should I start building immediately?”

In Forecast AI plans, periodization typically means:

• Earlier phases emphasize building a foundation (typically - but not always - Low strain)
• Later phases include more targeted intensity (more High/Peak strain) as your goal approaches

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Periodization Level Slider

Xert lets you customize your Level. In simple terms:

• Higher periodization (slider right) → More training emphasis is shifted later in the program.
  • This can reduce total training volume across the full plan and may show as a small dip in training load early on, followed by more training later.
• Lower / no periodization (slider left) → Training load begins building immediately from where you are now to where you wish to be by the end of the plan.
  • This increases total training volume across the plan and reduces (or eliminates) any early dip in training load.

Most athletes could leave this at the default unless they have a specific reason to change it.

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Where You’ll See It

• Profile Settings > General Tab > Program Settings (Periodization Level)
• In the Forecast Chart, where changes may appear as a small dip early in the plan when periodization is higher. 

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Related Terms

• Forecast AI (XFAI)
• Training Load
• Training Status
• Polarization
• Training Availability