RIR progression: the next-set logic that turns “reps in reserve” into add weight or add reps

What RIR progression is (and why it beats guessing)

RIR progression is a simple way to apply progressive overload by tracking effort with “reps in reserve,” meaning how many more reps you had left when you stopped.

At this point in training (about two years in), most people know what heavy feels like. The problem is that “heavy” is vague on paper. Two sessions can feel similar, but your actual effort can be different. RIR gives you a repeatable signal.

The goal is not to chase failure every set. The goal is to hit your reps target at the RIR you planned, then earn the next increase.

If you want this to be extra consistent, GymLog can help you log sets out loud and track your RIR pattern over time, so the rule stays clean even when life gets messy.

Pick a next-set rule before you lift (your add weight or add reps ladder)

Use this logic for each exercise: barbell bench, squat, deadlift, rows, presses, everything.

You need two things:

1. A target RIR range for the working sets.
2. A reps target for each set or for the set as a whole.

Example targets for most hypertrophy and strength hybrids:

• Working sets: 2 to 3 RIR
• Rep range: usually 5 to 10 depending on the lift

Now the next-set logic.

The basic rule (one exercise, one session)

For a given working weight on set 1, set 2, set 3:

• If you meet or exceed your planned reps on all sets AND your achieved RIR matches your target range, you earn an increase next time.
• If you miss reps or you end up with fewer RIR than planned (closer to failure), you do not increase next time.

That sounds obvious, but the missing piece is: what do you do when you “earn” progress? You choose between add weight or add reps.

RIR progression: the add-weight-or-add-reps rule for each exercise

Here is a rule you can use exercise by exercise. It turns each RIR result into a clear next action.

Step 1: Define a “rep floor” and a “rep ceiling”

Let’s say your prescription is 3 sets of 8 reps.

• Rep floor: 8 reps (the minimum you must hit)
• Rep ceiling: 10 reps (the maximum reps you allow before you switch strategy)

You can set the ceiling as rep range, like 8 to 10, instead of picking 10, but the concept stays the same.

Step 2: Track the set outcome using RIR

For the session at the current weight, score each set:

• Good set: you hit the rep floor (or higher) AND you stop with your target RIR range.
• Great set: you hit rep ceiling (or the top of the rep range) AND you still stay within your target RIR range.
• Miss: you fail the rep floor OR you stop with less RIR than planned.

Step 3: Convert that score into the next session move

Use this action table.

If you logged all working sets as Good

• Next session: add reps first.
  • Add 1 rep per set (example: 8s become 9s across all working sets) OR add just for set 1 then match the rest, depending on your preference.

Why add reps first? Because it lets you accumulate technique volume while the weight stays manageable.

If you logged all working sets as Great

• Next session: add weight.
  • Increase the load by the smallest sensible jump for that exercise.
  • Then reset reps to the rep floor (example: from 10s back to 8s).

Why add weight only when reps are at the ceiling? Because it prevents “micro-jumps” in weight when you have not exhausted your current rep ceiling potential.

If you had any Miss

• Next session: keep the same weight and try again.
  • Often the simplest version is “same weight, same prescription.”
  • If your miss was small (for example you got 7 reps instead of 8 but your RIR was only slightly off), you can reduce the next target by 1 rep temporarily.

Honest caveat: RIR is easy to misjudge, especially on compounds. If your RIR calls are all over the place, the rule will wobble. For a couple weeks, be conservative and consistent. “2 RIR” should feel like you could do one more rep with clean form. If you cannot, you are closer than you think.

How to apply this to different rep ranges

Not every lift should use the same progression pace.

Heavy-ish strength work (example: 3 to 6 reps)

If your prescription is 4 to 6 reps with 2 RIR:

• Rep floor: 4
• Rep ceiling: 6

Rule behavior:

• Good session means add reps next time.
• Great session means add weight next time.

Weight jumps matter more here. Use smaller increments than you think, especially on squats and bench. If you jump too big, you will miss the rep floor and stall.

Hypertrophy work (example: 8 to 12 reps)

If your prescription is 8 to 12 reps with 2 to 3 RIR:

• Rep floor: 8
• Rep ceiling: 12

Rule behavior:

• You will likely add reps more often than you add weight early on.
• That is good. Hypertrophy responds well to quality volume.

Accessories (example: 10 to 15 reps)

For isolation work, you can be slightly looser.

• Keep RIR target at 1 to 3 RIR.
• Use add weight more aggressively once you hit the top of the rep range.

Honest caveat: too much intensity on accessories can mess up joint tolerance. If your shoulders or elbows hate you, you might need a tighter RIR ceiling and slower weight increases.

A full example for one exercise

Let’s use incline dumbbell press with 3 sets, target 2 to 3 RIR, rep floor 8, rep ceiling 10.

Session A (current weight):

• Set 1: 9 reps, 2 RIR
• Set 2: 9 reps, 3 RIR
• Set 3: 8 reps, 2 RIR Result: Good sets across the board. Next session: add reps.
• Go for 9, 9, 9 or 10, 9, 9 depending on how you like to prescribe.

Session B:

• Set 1: 10 reps, 2 RIR
• Set 2: 10 reps, 2 RIR
• Set 3: 9 reps, 2 RIR Result: Not Great because you did not hit the ceiling on every set. It is still at least Good. Next session: add reps again if you can, but you may also choose to “lock” the reps and aim for consistent ceiling next.

Session C:

• Set 1: 10 reps, 2 RIR
• Set 2: 10 reps, 2 RIR
• Set 3: 10 reps, 2 RIR Result: Great session. Next session: add weight.
• Increase dumbbells by the smallest practical jump.
• Reset to 8 reps for all sets.

This is RIR progression turned into a repeatable add-weight-or-add-reps rule.

How this interacts with the rest of your training plan

Mesocycle and fatigue

In a mesocycle (a training block, usually 4 to 8 weeks), you are stacking progress while managing fatigue. If you keep progressing with this rule every week, you may run out of recovery before the calendar does.

So watch your RIR trend (your reps in reserve pattern over multiple sessions). If your achieved RIR drops across weeks at the same weight and the misses increase, that is your cue to adjust.

This is where missed targets matter more than ego. You are not “weak” if the plan says you should have hit 8 at 2 to 3 RIR and you only got 7 at 1 RIR. You just need to respond.

Deload (planned lighter training)

A deload is a short period of reduced volume or intensity to restore performance. If your rule starts failing for multiple sessions in a row across multiple lifts, you can plan a deload instead of forcing progress.

I am not repeating deload timing rules here because you already have a separate guide that uses your RIR trend and missed targets. The key is that RIR progression is the early warning system.

Common mistakes that break RIR progression

1. Changing the target RIR mid-lift. Your target should be set in advance. If you randomly decide “maybe I will go closer today,” the rule becomes meaningless.

2. Treating RIR as perfectly precise. It is not a force measurement. It is an estimate. Build trust by being consistent, not by being exact.

3. Only tracking total weight. In this system, reps at a given weight are part of progress. If you never count them, you will miss the point.

4. Progressing through sloppy reps. If your rep quality drops so much that you are effectively doing a different exercise, your RIR estimate will lie to you.

Quick checklist you can use next session

• Target RIR range set before you start
• Rep floor and rep ceiling chosen for the exercise
• You hit rep floor on all sets at target RIR range
• If all sets are good: add reps next session
• If all sets are great: add weight next session and reset reps
• If you missed: keep weight and try again or drop 1 rep temporarily

If you run this for 4 to 8 weeks, you will usually see a clean, repeatable pattern in your RIR progression. And because the decision is objective, you will spend less time guessing and more time lifting.

If you want, set GymLog to collect your RIR and reps, then review the data after each workout so your “what do I do next?” question becomes automatic.