Understanding RPE
Rate of Perceived Exertion is a powerful tool for autoregulating your training and making consistent progress.
What is RPE?
RPE (Rate of Perceived Exertion) is a scale from 1-10 that measures how hard a set feels based on how many reps you have left in reserve (RIR). It was popularized in powerlifting by Mike Tuchscherer and is now widely used in strength training.
Instead of prescribing a specific weight, RPE allows you to adjust the load based on how you feel that day. This accounts for variables like sleep, stress, nutrition, and recovery.
The Formula: RPE = 10 - Reps in Reserve
Example: If you could do 2 more reps with good form, that is RPE 8 (10 - 2 = 8)
The RPE Scale
| RPE | Reps Left | Intensity | Description |
|---|---|---|---|
| 10 | 0 | Maximal | Maximum effort. No reps left in the tank. |
| 9.5 | 0.5 | Near Max | Could maybe do one more, but not confident. |
| 9 | 1 | Very Hard | Could definitely do one more rep. |
| 8.5 | 1.5 | Hard | Could do 1-2 more reps. |
| 8 | 2 | Challenging | Could do 2 more reps with good form. |
| 7.5 | 2.5 | Moderate-Hard | Could do 2-3 more reps. |
| 7 | 3 | Moderate | Could do 3 more reps. |
| 6 | 4 | Light | Could do 4+ more reps. Warm-up weight. |
Why Use RPE?
Autoregulation
Adjust training intensity based on how you feel each day. Some days you are stronger, some days weaker - RPE accounts for this.
Progressive Overload
Track your progress more accurately. Hitting the same weight at a lower RPE means you are getting stronger.
Better Recovery
Avoid overtraining by keeping most sets at RPE 7-8 and reserving RPE 9-10 for testing or competition.
Tips for Using RPE
Start Conservative
When learning RPE, most people underestimate their RPE. What feels like an RPE 8 is often an RPE 6. Start by leaving more reps in the tank.
Film Your Sets
Recording your lifts helps calibrate your RPE. Bar speed slows significantly as you approach failure.
Use Rep Maxes
Occasionally test your true rep maxes to calibrate. If you estimated RPE 8 but actually failed, you now know what RPE 10 feels like.
Consider Bar Speed
Fast, explosive reps = lower RPE. Slow, grinding reps = higher RPE. The last rep before failure is usually noticeably slower.
Account for Exercise
RPE feels different for different exercises. Squats at RPE 8 feel different than curls at RPE 8.
Log Everything
Track your weights, reps, and RPE in Forte. Over time, you will see patterns and improve your self-assessment.
Practical Example
Your program calls for: Squat 3x5 @ RPE 8
Warm-up: Bar x 10, 135 x 5, 185 x 3, 225 x 2
Set 1: 275 lbs x 5 - felt like RPE 7, could do 3 more
Set 2: 285 lbs x 5 - felt like RPE 8, could do 2 more
Set 3: 285 lbs x 5 - felt like RPE 8.5, fatigue setting in
Notice how the weight was adjusted based on feel. On a different day with better sleep, you might hit 295 lbs at RPE 8. That is the power of autoregulation.
Ready to Train Smarter?
Forte programs use RPE-based training to help you make consistent progress while managing fatigue and recovery.