Training glossaryFundamentals & measures
RIR (reps in reserve)
RIR is the number of repetitions you could still perform when you end a set.
Also known as: Repetitions in reserve
Training with 1 to 3 reps in reserve on most sets tends to balance stimulus and recovery, allowing more quality volume across the week.
RIR is a practical way to autoregulate load: instead of following only a fixed percentage, you adjust the weight by how close to failure you are on that day.
Sources
Scientific references behind this entry.
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