Pick the days in the Overview and open them as a series (⌘⇧S). Each column is a week and each row is one exercise lined up across the weeks, so a block's progression reads left to right. You edit a cell the same way as in the week grid.
Fill right copies a cell across the weeks. Progress steps a load, sets or reps by an amount every week or every second week, and one undo takes the whole change back. Weeks the athlete already logged are left alone, and the message after the change counts them.
When one week has a swapped exercise, it sits in the row of the exercise it replaced and is marked. Match the other weeks puts the original back, and Use in every week copies the swap to the weeks not yet logged. If your athletes train in 10-day cycles, the columns follow the cycle, and a week with no session shows as a gap.
You can paste rows from Google Sheets. A load like "75%" becomes a percentage of the athlete's max, and + Week adds the next week with an optional progression.
Improvements
- Select similar (⌥⌘S) picks the days that share most of their exercises, and a block or phase opens as a series from its menu.
- Rows select the way they do in the week grid, including groups.
- Copy a series and it pastes into Sheets as rows and weeks.