RIR
RIR: definition
Reps in Reserve. The number of reps you could still perform before reaching failure. RPE 8 = 2 RIR.
What RIR means in practice
Reps in Reserve. The number of reps you could still perform before reaching failure. RPE 8 = 2 RIR.
Use the definition as a starting point, then connect it to your programme, exercise selection, nutrition targets, or progress data.
Related Terms
RIR: quick questions
What does RIR mean?
Reps in Reserve. The number of reps you could still perform before reaching failure. RPE 8 = 2 RIR.
Why does RIR matter in fitness?
Understanding RIR makes it easier to follow programmes, interpret coaching instructions, and make informed training or nutrition decisions.
Where can I learn more about RIR?
Continue with the related concepts RPE, Progressive Overload or browse the PT Tracker exercise, programme, and calculator libraries.
Ready to transform your training?
Track workouts, nutrition, and progress in one place. Start for free, then upgrade when the premium tools make sense for you.