What is Smart Fatigue Swap?

Smart Fatigue Swap is a Pro card on the Today screen that checks the routine you planned for tomorrow. It reads muscle recovery from the sets you have logged. When at least half of that routine’s main muscles are still tired or recovering, the card names them and suggests another of your routines instead, one whose main muscles are at least 75% fresh.

Tap Swap and tomorrow’s plan changes to the suggested routine, with an Undo button in case you change your mind. Keep plan leaves things as they were and hides the card for the rest of the day. If none of your routines is fresh enough, the card offers Make tomorrow a rest day, which you can take or ignore.

The info button on the card explains how it decided. Days that belong to an active training program, such as 5/3/1, are left alone so the program stays on track. The card only suggests, and your plan never changes until you tap.