Nishaana
What is Reps in Reserve (RIR)?
An estimate of how many more reps you could do before reaching failure.
In context
Reps in Reserve (RIR) is a key concept in training. An estimate of how many more reps you could do before reaching failure. Knowing what it means — and how it connects to the rest of your training — turns it from jargon into something you can actually use in the gym.
Nishaana is built around ideas like this: it tracks the numbers behind them automatically, so the theory shows up as real progress in your logbook rather than staying abstract.
Related training terms
Common questions.
What does reps in reserve (rir) mean?
An estimate of how many more reps you could do before reaching failure.
What category does reps in reserve (rir) belong to?
Reps in Reserve (RIR) is a term from training in strength and fitness training. Browse more training terms in the Nishaana glossary.
Why does reps in reserve (rir) matter for training?
Understanding reps in reserve (rir) helps you train and program more deliberately — it is one of the ideas that separates guessing from a real, repeatable system.
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