Training Surplus & Deficit – Knowledgebase

Training Surplus and Deficit in Xert indicate if you are training above or below the amount needed for your chosen Improvement Rate (IR), calculated over a rolling 7-day window. Xert’s Adaptive Training Advisor uses this to adjust daily recommendations, aiming to keep your training balanced over time rather than achieving a zero deficit daily.

Summary Generated by AI

Definition

Training Surplus & Deficit show whether you are currently training above or below the amount needed to meet your selected Improvement Rate (IR).

Adjusting your Improvement Rate will directly affect your Surplus or Deficit. Increasing your IR typically results in higher recommended training (build phases), while lowering it reduces training demands (recovery or rest periods).

A Deficit means you have trained less than required.
A Surplus means you have trained more than required.

What It Represents

Xert compares the amount of training you have recently completed, relative to the amount of training required to achieve your selected Improvement Rate. This comparison is calculated using a rolling 7-day window, rather than being a weekly calculation.

Your Training Surplus or Deficit gives you feedback on whether you are:

Training more than necessary
On track, or
Falling behind

How Xert Uses It

The Xert Adaptive Training Advisor (XATA) uses your surplus or deficit to adjust daily recommendations, in combination with your available training time.

If you have a large deficit, XATA might increase your Recommended XSS targets to help you catch up.
If you have a large surplus, XATA may recommend lighter sessions or additional recovery.

The Training Pacer Gauge

Your surplus or deficit is displayed using the analogue Training Pacer gauge on the Today page.

When the pacer needle points near 12 o’clock, you are on track.
If it points to the left, you are falling behind.
If it points to the right, you are training ahead of schedule.

A second indicator - the small triangle - shows where you are projected to be 24 hours from now. This projection accounts for any planned workouts or activities and is colour-coded based on your expected Training Status at that time.

Important Note: The goal is not to necessarily close the deficit to exactly 0 XSS every day. Instead, aim to keep the pacer generally centered over time.

Importantly, surplus and deficit do not carry over week-to-week.

If you start falling behind your target, Xert tries to help you gradually catch up within your available time.
If you exceed your target one week, you still need to train the next.

Training needs are recalculated continuously using a rolling 7-day window. You might notice more variability in the surplus/deficit & training pacer if you completed a big week of training (like a training camp), or if you had a week off training about a week ago. This is normal and reflects the rolling 7-day calculations.

Where You’ll See It

In the Program Information panel of the Today Page
In the Xert EBC iOS app

Common Misunderstandings

Having a deficit isn't inherently bad. It simply means additional training is needed to maintain your selected rate of improvement. In fact, the more fit you become, the larger your daily deficit may appear before you train — this is normal.
A surplus doesn’t necessarily mean you should stop training. It reflects recent training relative to your selected Improvement Rate, not whether you should take time off.
If you consistently struggle to close a deficit, your Improvement Rate may be set too high.
If you consistently have a large surplus, your Improvement Rate may be set too low.

Related Terms

Xert Adaptive Training Advisor (XATA) • Improvement Rate • Xert Strain Score (XSS) • Training Status