Circuit training: what it is, a full-body circuit to run, and where it fits in your week

A circuit is a list you go round. You do one exercise, move straight to the next, and work through the whole list before you rest properly. Then you go round again. It's the same idea as a superset stretched from two exercises to six or eight, and it keeps a session moving.

This page covers what a circuit is, what the research found, a full-body circuit with a gym and a home version, how it differs from HIIT, where it fits in a week, and what it isn't suited to.

What a circuit is

A 2021 meta-analysis describes resistance circuit training as single or several sets of different exercises completed in succession with little rest between exercises. Its description runs from light loads to heavy ones, with either a set number of repetitions (12 to 15, or fewer) or a set length of time such as 30 seconds, and a very short rest between exercises, for example 30 seconds.¹

That describes the order, not the effort. HIIT is defined by effort: repeated near-maximal bouts with short recovery.² A circuit turns into HIIT if every station is a hard effort with recovery, like the bodyweight session on the HIIT workout page. A circuit of moderate sets is just a circuit.

What the research found

• Fitness and strength. A 2017 meta-analysis of resistance circuit training in healthy adults aged 18 to 65 pooled eight studies of maximal oxygen uptake (118 adults) and eight of one-repetition-maximum bench press (237 adults). Both increased after training and were higher than in control groups.³
• The dose. For large effects on maximal oxygen uptake, the authors point to about 14 to 30 sessions over about 6 to 12 weeks, each lasting at least about 20 to 30 minutes at about 60 to 90% of one-repetition maximum.³
• Strength more widely. A 2021 meta-analysis of 45 studies found circuit training increased the strength of the upper and lower limbs.¹ The American College of Sports Medicine's 2026 position stand, an overview of reviews, lists circuit resistance training among the forms of lifting that improved strength.⁴

Two limits. These are pooled trials of programs lasting weeks, not single sessions. And the circuits in them varied: the 2017 authors found it worked whatever protocol the studies used, with larger effects depending on the population and the training.³

A full-body circuit

Six stations, alternating lower and upper body, so the muscles you just used rest while the next ones work. That order is a practical choice, not a finding about circuits. The nearest research is on supersets: a 2025 review found that pairing opposing muscles was more suitable for maintaining training volume, while pairing the same muscle compromised volume load.⁵ That finding is about opposing-muscle pairs, not upper-lower alternation.

The session: a five-minute warm-up, then 30 seconds on each station with 30 seconds to move to the next. Do two rounds for the first two weeks and three after that, with about two minutes between rounds. Pick weights that leave two or three reps in reserve at the end of each station, so the last station is as clean as the first (reps in reserve explains how to judge it). Two rounds take about 19 minutes with the warm-up and three take about 27. The 2017 authors' dose was sessions of at least 20 to 30 minutes at about 60 to 90% of one-repetition maximum;³ the session here is a practical starting point, not that dose. The 30-second work and rest are the example the 2021 review gives;¹ the rest is practical.

To progress, add a round before adding weight; when you add weight, drop back to two rounds and build up again.

Where it fits in your week

The World Health Organization's guideline for adults includes muscle-strengthening activity that involves all major muscle groups on two or more days a week;⁶ the circuit above touches each group. The 2017 review's dose of 14 to 30 sessions over 6 to 12 weeks works out to two or three a week.³ Put them on days that aren't back to back, and keep a hard leg day away from a circuit that starts with squats.

What a circuit isn't suited to is heavy lifting. The American College of Sports Medicine's 2009 position stand recommends 3- to 5-minute rests between sets for heavy loading of 1 to 6 repetitions. For local muscular endurance, it recommends light to moderate loads of 40 to 60% of one-repetition maximum, more than 15 repetitions and rests under 90 seconds.⁷ A circuit's 30-second rests fit the second; the first needs a different session, like the 30-minute workout or a full-body plan.

Common questions

Is circuit training cardio or strength?

Both were measured: in the 2017 review, maximal oxygen uptake and bench-press strength each rose after circuit training.³ For heavy strength work, the section above says why a circuit isn't the tool.

How many exercises should a circuit have?

Six is a practical start: it covers squat, push, hinge, pull, step and core. The 2017 review pooled studies with different protocols and found gains across them, so there isn't one right list.³

How long should the rest be between stations?

Thirty seconds is the example the 2021 review gives.¹ If the next station won't be clean, take longer between rounds rather than shortening the work.

Is a circuit the same as a superset?

The same idea, with a longer list. A 2025 review defines supersets as the sequencing of two exercises with little or no rest between them.⁵ Supersets covers pairing exercises, and when to leave them out.

If you'd rather have the week planned

A circuit is a list, and what goes on it, and how it changes as the weeks go, is the part a page can't see. Coaching is the version where your workouts live in the Trainerize app, built around the days and the equipment you actually have, and a weekly call looks at how the week went and sets the next one. Coaching for beginners explains how the first weeks work, and apply is the first step. Otherwise: run the six-station circuit this week, two rounds, and write down what you used.