A 7 minute workout timer runs twelve bodyweight exercises for 30 seconds each with 10 seconds of transition between them, which comes to 7 minutes and 50 seconds of actual clock. The circuit comes from a 2013 article by Brett Klika and Chris Jordan in the ACSM’s Health & Fitness Journal, titled “High-Intensity Circuit Training Using Body Weight: Maximum Results With Minimal Investment.”

It went viral after the New York Times wrote it up, which is the only reason anyone has heard of an article in a trade journal for exercise physiologists.

The full circuit, in order

#	Exercise	Time	Primary target
1	Jumping jacks	30s	Total body, warm-up
2	Wall sit	30s	Quads, isometric
3	Push-up	30s	Chest, triceps
4	Abdominal crunch	30s	Core
5	Step-up onto chair	30s	Legs, glutes
6	Squat	30s	Legs, glutes
7	Triceps dip on chair	30s	Triceps
8	Plank	30s	Core, isometric
9	High knees running in place	30s	Total body
10	Lunge	30s	Legs, glutes
11	Push-up and rotation	30s	Chest, core
12	Side plank	30s	Core, oblique

Ten seconds of rest between each. Equipment: a wall and a chair.

The order is not arbitrary

The exercises alternate between upper body, lower body, and core on purpose. While your chest is working on the push-up, your legs are recovering from the wall sit. That alternation is what lets you sustain high intensity across twelve stations without a single long rest block.

If you rearrange it into all the leg work then all the upper body work, you have made a much worse circuit. The sequencing is the design.

The 7 minute workout timer is preset with all twelve intervals and the 10 second gaps, so you get a cue at every station change and never have to count.

Intensity, which is the part everyone skips

The paper specifies an intensity of roughly 8 to 9 on a 10-point perceived exertion scale. That means each 30-second block is close to as many good reps as you can manage, not a comfortable 30 seconds of movement.

Ten seconds of rest is a transition, not a recovery. It exists so you can get from the floor to the wall.

Klika and Jordan also say plainly that one circuit is the minimum dose and the protocol can be repeated two to three times for a longer session. The “7 minutes” framing is marketing that grew around the article, not the ceiling the authors described. Two or three rounds with a minute between them is about 25 minutes and is a genuinely serious workout.

Common problems

Crunches and step-ups feel too easy. They are the lowest-intensity stations. Speed them up rather than adding reps you cannot control.

Push-ups collapse at 20 seconds. Drop to knees for the remainder. Finishing the interval with worse form is not a better outcome than modifying it.

No suitable chair. Use a step, a bench, or a sturdy low table. For dips, any edge at roughly knee height works.

Side plank only on one side. The original lists it as one station. Do 15 seconds a side, or run the circuit twice and switch.

Where it fits

This is a good default for days with no equipment, no gym, and no time. It is not a replacement for strength training with load, and the paper does not claim it is. Bodyweight circuits build muscular endurance and cardiovascular capacity. They do not build maximal strength past a fairly early ceiling.

Three sessions a week is a reasonable dose. On the days in between, something longer and easier.

If you want to change the timing, the interval timer lets you set your own work, rest, and round count. For a shorter and harder option, a tabata timer does four minutes at 20/10. For the opposite end, 3 minute boxing rounds give you long work blocks with real rest.

Running it

Prop the phone where you can hear it rather than see it, because you will spend a third of the circuit face down. The screen stays awake with a wake lock, and the timing runs off timestamps, so it stays correct even if the display does drop out.

Try it: run the 12-station circuit.