Which term signifies the number of repetitions performed in a workout?

The term that signifies the number of repetitions performed in a workout is "reps." In strength training and resistance exercise, a repetition, commonly referred to as a "rep," is one complete motion of an exercise. Reps indicate how many times an exercise is performed within a single set.

To clarify the context, sets denote a group of consecutive repetitions performed before taking a break. Therefore, while sets count the completed groups of reps, the individual repetitions are what define the effort exerted during that exercise period. Volume refers to the total weight lifted over a training session, which typically considers both the number of sets and reps, while "series" is not a standard term used in this context.