How to Read a Workout Plan: Sets, Reps, Rest, and Effort

A workout plan may fit an exercise name and several instructions into one short line. Before you start, separate that line into five parts: the movement, how many times to repeat it, how many groups to complete, how long to rest, and how demanding the work should feel.

Understanding the notation helps you follow the plan you have and identify missing information. The example below teaches the language; it is not a complete workout or a prescription for every adult.

Start with one annotated example

Imagine a plan includes this line:

Seated row | 2 × 8–10 reps | Rest 90 seconds between sets | About 2 reps in reserve

Here is how to read it:

• Seated row: The named exercise. You still need to know the intended equipment, setup, and technique.
• 2: The number of sets, or groups of repetitions.
• 8–10 reps: The intended repetition range for each set.
• 90 seconds: The stated rest interval after the first set and before the second.
• About 2 reps in reserve: An effort cue, explained below.

Notice what is missing: the resistance to use, the warm-up, and instructions for changing the load over time. The line alone cannot answer those questions. Read the surrounding plan or ask for clarification.

Reps describe individual movements

A repetition, usually shortened to “rep,” is one completed movement of an exercise. For a push-up, lowering and returning to the starting position make up a repetition. A set is a group of repetitions performed together. NHS: Strength and Flexibility

In the example, “8–10” is a range for each set. It does not mean to complete eight sets of ten repetitions. If you complete eight repetitions in each of the two sets, you have completed sixteen repetitions in total.

Some exercises count each side separately. “Eight per side” and “eight total” describe different amounts of work. If the plan does not make that distinction clear, check before guessing.

Sets tell you how the work is grouped

The “2” in “2 × 8–10” means two sets. With the example's stated rest instruction, you complete the first set, take the rest interval, and then complete the second set.

Read the session structure too. A plan may pair exercises or arrange them in a circuit. In that case, you might perform another movement before returning to the first one. Follow the plan's order rather than assuming every exercise uses the same sequence.

Warm-up sets may be listed separately from the main working sets. Check how your plan counts them. Do not silently add them to, or subtract them from, the written target.

Rest is part of the instruction

A rest interval tells you when to pause between bouts of work. In the sample, the pause between the two sets is ninety seconds. That number illustrates the notation; it is not a universally correct interval.

Check the units. “90 sec” and “90 min” clearly differ, and a bare number deserves clarification. Also check whether rest is listed between sets, between exercises, or after a full round of a circuit.

Use a timer if it helps you follow the written instruction. If the rest period repeatedly leaves you unable to perform the next set as intended, record that and ask about an appropriate adjustment. Do not shorten rest automatically just because you want the session to finish sooner.

Effort explains how demanding the set should be

Reps in reserve, or RIR, is an estimate of how many more repetitions you think you could complete at the end of a set. About two RIR means you estimate that roughly two more repetitions were available. It is subjective, so treat it as an estimate rather than a precise measurement. Canadian Sport Institute Ontario: RPE and Repetitions in Reserve

That cue is not an instruction to perform the extra repetitions. It describes where the set is intended to stop. If you are new to the exercise or unsure what the target should feel like, ask a qualified trainer to help you interpret it.

You may also see RPE, a rating of perceived exertion. Different scales and descriptions exist, so use the key supplied with your plan. Do not assume that an unlabeled “8” has the same meaning in every program. Canadian Sport Institute Ontario: RPE and Repetitions in Reserve

A plan does not need to require maximum effort on every set. ACSM's 2026 guidance notes that training to momentary muscle failure did not consistently improve outcomes for the average healthy adult in the evidence it reviewed. ACSM: Updated Resistance Training Guidelines

Record what you actually completed

Keep the plan and your completed work distinct. A fictional entry might read:

“Seated row, same machine: 20 lb. First set: 9 reps. Second set: 8 reps. Rested 90 seconds. Unsure about the effort estimate; ask for help.”

The entry preserves the units, repetitions, and uncertainty. It does not pretend that the planned range and the completed work were identical.

Check the unclear parts before you start

Before an unfamiliar session, confirm the exercise setup, units, counting method, order, rest instructions, and effort scale. Get qualified guidance for unfamiliar technique or individual restrictions. Never use a notation guide as clearance to work through concerning pain or symptoms.

Long Road Fitness includes adaptive workout plans and exercise swaps. Whatever exercise you are following, read its instructions as a whole. Knowing what the numbers mean gives you a clearer starting point for the session and a more useful record afterward.

Sources

• NHS: How to Improve Your Strength and Flexibility. Explains the basic meanings of repetitions and sets.
• Canadian Sport Institute Ontario: RPE and Repetitions in Reserve. Explains perceived-effort scales, RIR, and their limitations.
• ACSM: Updated Resistance Training Guidelines. Provides current context on training to failure and individualizing resistance training for healthy adults.