Programs, workouts and Saved Workouts
A program is a multi-week plan, a workout is one session, and a Saved Workout is a session you can run again.
Open the menu on the exercise you want to replace and choose Swap Exercise. The picker searches all 448 exercises, and for a program exercise it groups suggestions under Best Fit and Good Alternatives. If your search doesn't match, it offers Did you mean.
Pick the replacement, then choose how long the swap lasts.
The last two only show when you're in a program workout.
Settings, then Exercise Swaps lists the swaps you've saved, so you can see what's replacing what.
The replacement is logged like any other exercise.
A program is a multi-week plan, a workout is one session, and a Saved Workout is a session you can run again.
Library holds your current program, programs, Saved Workouts and exercises. Explore is the catalog.
Open a session from History, choose Edit Workout, fix the sets, and save. Your PRs and training max update to match.