A repetition is one complete movement and a set is a group of repetitions. Beginners can start with a modest amount of work using a load they can control, then adjust based on technique, effort and recovery.
What is a repetition?
A repetition, often shortened to rep, is one complete cycle of an exercise. One controlled squat down and back to standing is one repetition. One complete dumbbell curl is also one repetition.
Repetitions help describe how much work you perform in a set, but the number alone does not tell the whole story. Resistance, movement quality, range of motion and effort all matter.
What is a set?
A set is a group of repetitions performed before you rest. If you complete 10 squats, rest, then complete another 10, you have performed two sets of 10 repetitions.
The total amount of work in a session is sometimes called training volume. For beginners, a small amount of well-controlled work is often easier to learn and recover from than a large number of sets.
How many sets and reps should beginners do?
There is no single number that suits every exercise and person. The CDC describes 8 to 12 repetitions as one set in its general adult activity guidance and notes that one set can provide benefit, with two or three sets offering additional benefit. That is a general reference, not a mandatory prescription for every beginner.
Start with a manageable set count and repetition range that allows steady technique. Some exercises may need fewer repetitions because they are more demanding or technically complex.
Choose a resistance you can control
The weight or band tension should allow you to complete the planned repetitions without swinging, rushing or losing your position. The final repetitions may feel challenging, but you should not need to force them with poor technique.
If the exercise feels too easy, first check that you are using a suitable range of motion and controlled tempo. If it feels too difficult, reduce the resistance or choose an easier variation.
How much rest should you take?
Rest long enough to regain control and feel ready to perform the next set with good technique. The amount depends on the exercise, resistance, effort and your conditioning.
For a beginner, a little extra rest is usually more useful than rushing from set to set. Shorten rest gradually only if the workout goal and exercise quality support it.
Example starting structure
A simple full-body workout could use one or two sets of a few exercises, with a comfortable repetition range and rest between sets. For example, you might pair a squat variation with a push and a row, then finish with a trunk stability movement.
Record the exercises, resistance and repetitions. When you can complete the planned work consistently with good control, consider a small progression rather than changing everything at once.
Frequently asked questions
Are 3 sets of 10 reps good for beginners?
Three sets of 10 is one possible structure, not a rule. Some beginners may do better starting with one or two sets or using fewer repetitions for a demanding exercise.
Should I do more reps or use heavier weights?
Both can increase the challenge. Choose the option that allows you to maintain technique and progress gradually. Change one variable at a time.
How long should I rest between sets?
Rest until you can perform the next set with control. More demanding exercises or heavier resistance may require longer recovery.
Related guides
Continue exploring this topic with these related Exercisen guides.
Put it into practice
Use the exercise library to learn movement setup, then choose a strength workout with a manageable amount of work.
This guide is general educational information, not individual medical advice. Choose activities that suit your current abilities and circumstances. If you have a health condition, disability, recent injury, persistent pain or concerns about starting or changing exercise, seek advice from an appropriately qualified health professional.