Muscle Fatigue

The Muscle Fatigue map estimates how fatigued each muscle is from your recent training sessions and how much it has recovered since. Use it as a quick guide when deciding which muscles may be ready to train again.

The scale runs from Rested on the left to Overtrained on the right. Rested muscles appear gray; stronger colors indicate more accumulated fatigue.

You can find the map on the Home tab. Depending on your layout settings, it can also appear during a workout session.

How HeavyTrack estimates muscle fatigue

The estimate takes into account:

your completed sets from recent strength-related workouts
the type and number of sets you performed
how strongly each exercise involves each muscle
the recovery time of each muscle and your personal recovery profile
elapsed time
available sleep data

Fatigue falls as a muscle recovers. New completed sets and updated sleep data automatically refresh the calculation. You can also tap the refresh button in the top-right corner of the map.

The map is an estimate intended to help plan your training, not a medical measurement.