Why review load history

Apple Health stores workout history. To plan the next sessions, it helps to view accumulated load beside current recovery rather than only a list of workouts.

Arry helps you see when rising load is building fitness and when fatigue may be accumulating instead.

What Arry shows

Arry shows training metrics beside sleep, HRV, resting heart rate, and recovery.

TSS
Session stress that helps compare workouts on one scale.
CTL
Longer-term fitness trend built from repeated work.
ATL
Short-term fatigue pressure from recent sessions.
TSB
The balance between form and fatigue on a given day.

Use these metrics with recovery score, HRV, resting heart rate, and sleep.

What this gives you in practice

  • A way to see whether fatigue remains after a hard training block.
  • A way to connect yesterday’s workload to today’s recovery score.
  • Workout and recovery readings connected through Apple Health.
  • No need to switch between separate charts to check fatigue.

Why load only makes sense with recovery

If ATL is high and TSB has fallen, check sleep, HRV, and resting heart rate. Matching changes may be a reason to lighten the next workout.

Arry keeps recovery, HRV, and training load in one place.

Check training load before the next hard workout, not only after it.

Who this page is for

These metrics are useful for people who train regularly and want to schedule harder days with accumulated fatigue in mind.

Download Arry Open Training Load

FAQ

Do I need an Apple Watch?

Arry needs data in Apple Health. Apple Watch or another compatible tracker can provide it.

Is this only for cyclists and runners?

No. The main value is for anyone whose training creates accumulated fatigue and requires pacing across multiple days, not only for one sport category.

Why not keep training load in a separate app?

Because load is much easier to understand when it sits next to sleep, HRV, resting heart rate, and recovery in the same daily view.