How to Change Rep Range in a Workout Plan: A Simple Update Template

To change a rep range in a workout plan, edit the next-session prescription and leave past completed sets alone. Write the old range, the new range, the date it starts, and a short reason. For example, change a barbell row from 3 × 6–8 to 3 × 8–10 from the next session onward, while keeping the earlier 3 × 6–8 results in your workout history.

Copy this before making the edit:

Exercise: __________________________
Old prescription: _________________
New prescription: _________________
Starts on: _________________________
Why this is changing: ______________
First completed result: ____________

The point is not to find a magic rep range. It is to make one clear plan change, then see what you actually completed under that new plan. That makes your history useful when you look back at the same exercise later.

What should change when you update a rep range?

Change the plan for future sessions. Do not rewrite the result of a completed session to make it resemble the new plan.

That distinction is simple but helpful. A prescription is what you intend to try. A completed set is what happened on that date, with that load, setup, and number of reps. If you replace old 6–8 entries with 8–10 after the fact, you lose the context that explains why the numbers are different.

Resistance-training plans commonly use several variables together, including sets, repetitions, load, and rest. The American College of Sports Medicine's progression position stand discusses changing those variables as part of resistance training. It does not mean one range is automatically right for every person or exercise. If you are following a coach's program or have a health concern, use their direction before changing the prescription.

A worked example: changing 6–8 reps to 8–10 reps

Imagine your plan has three sets of barbell rows at 6 to 8 reps. You want the next block to use 8 to 10 reps instead.

The old result stays where it belongs: in the 6 to 8 rep block. At the next session, use the new range as the reference and log the real result rather than pretending it matches the previous session.

You do not need to change every variable at once. If the rep range changes, keep the note focused on that change. If sets, rest, exercise selection, or load also change, record those separately so future-you can read the log.

When is a rep-range update clear enough to track?

A useful update has a boundary. Use it when you are deliberately changing the prescription for upcoming sessions, not because a single hard set felt different from the plan.

Use this quick check:

1. Name the exercise and the old rep range.
2. Choose the new range for future sessions.
3. Set a first session or date for the change.
4. Leave prior completed sets unchanged.
5. Record the first completed set under the new range before judging it.

This is a record-keeping approach, not a rule for how often to change a program. A coach may have a specific progression or periodisation plan. If you have pain, a recent injury, or a condition that affects exercise, seek qualified guidance rather than using a tracking template as treatment advice.

A copyable rep-range update log

Use one row per exercise change. Keep it near the workout record, in a note, spreadsheet, or app.

For the barbell-row example, a completed row might look like this:

| Date | Exercise | Old plan | New plan | What stays the same? | First completed result | Note | | --- | --- | --- | --- | --- | --- | | 21 Aug | Barbell row | 3 × 6–8 | 3 × 8–10 | 3 sets, same exercise | 55 kg × 10, 9, 8 | new block |

The actual load in that example is not a recommendation. It is only there to show the shape of a complete record. Your log becomes much easier to compare when it says both what changed and what you truly did.

How can you update a program without losing workout context?

In PeakBFF, a program exercise can have a set target, a fixed-rep target or a rep range, and a rest target. Open the program exercise's targets, adjust the range, and save it for a future session. When you start a workout from that program, PeakBFF creates a new in-progress session from that prescription. The sets you finish remain records of that session, so editing the program later does not rewrite a completed workout.

This makes the app a practical place for the workflow above: update the plan, then log the session you actually perform. If you are building a broader weekly plan, our guide to scheduling rest days in a workout plan covers the calendar side. For an app-selection view of editable gym programs, see the complementary workout planner app comparison.

Download PeakBFF on iOS or Android to keep future prescriptions and completed gym sessions in one place.