Jumping Jack

Anton YefanovUpdated September 6, 2026

The jumping jack is the simplest whole-body cardio movement there is: jump the feet wider than hip width while the arms sweep overhead, then jump back to the start. The load falls on the glutes, quadriceps and hip flexors, with the abdominal and shoulder muscles working to open and close the arms, and the calves absorbing each landing. It is classified as jump training, so the same landing rules that govern plyometrics apply: soft contacts, a base level of conditioning first, and avoid hard surfaces such as concrete.

How to do the Jumping Jack

Stand tall with your legs straight and your arms at your sides.
Bend your knees slightly and load the feet ready to jump.
Jump your feet out past hip width as your arms sweep overhead.
Land softly through the whole foot with the knees slightly bent.
Jump the feet back together and bring your arms down to your sides.
Keep the rhythm continuous for the prescribed time or repetitions.

Muscles worked

Primary:: Quads and Shoulders
Secondary:: Glutes, Calves, and Core

Why train it

Raises heart rate using nothing but bodyweight and a small footprint.
Works legs, hips, trunk and shoulders in one simple repeating pattern.
Scales down to a low-impact stepping version for any fitness level.

Common mistakes

Landing with straight, locked knees, which sends impact into the joints.
Cutting the arm sweep short, which drops the shoulder work and the heart rate.
Performing them on concrete, which raises injury risk on repeated landings.
Piling on volume with no strength base, which the joints will register first.

Frequently asked questions

Are jumping jacks good cardio?

Yes, for short bursts. They raise your heart rate fast, need no equipment, and work well as a warm-up or in circuits. As your only cardio they get dull, and the repeated landings add up over long sessions. Mix them with lower-impact options like cycling or rowing for longer workouts.

Can jumping jacks help you lose weight?

They help by burning calories, about 8 to 12 per minute for most people. Five minutes of jumping jacks a day burns 50 or so calories, which is useful but small next to what you eat. Pair them with eating a little less than you burn, and they become part of a working plan.

Are jumping jacks bad for your knees?

Not for most people. The jumps are low and quick, and landing on the balls of your feet with your knees soft absorbs most of the impact. If your knees are sore, step out to the side one leg at a time instead of jumping, and you keep most of the cardio.

Jumping jacks or jump rope: which is better?

The jump rope is usually harder and burns a little more at the same pace, and it trains coordination and calves more. Jumping jacks need no rope, no ceiling height and no skill. If you can jump rope without stopping all the time, it is the better workout. Jumping jacks are the easier way in.

What muscles does the Jumping Jack work?

The Jumping Jack works the quads and shoulders hardest, with the glutes, calves, and core pitching in. As cardio, though, the bigger demand is on your heart and lungs rather than any one muscle.

What equipment do I need for the Jumping Jack?

None. The Jumping Jack is done with your body alone, so a little floor space is all it takes.

Is the Jumping Jack suitable for beginners?

Yes. The Jumping Jack is rated beginner. Start at a pace you could hold a conversation at, and build the time before you build the intensity.

Can I do the Jumping Jack at home?

Yes, anywhere. There is nothing to buy and nothing to set up, which makes the Jumping Jack one of the movements worth keeping for days you never reach a gym.

How long should I do the Jumping Jack for?

Five to ten rounds of 20 to 60 seconds hard with equal rest, or a few minutes steady as a warm-up. It fits at the end of a lifting session as well as on its own.

What are good alternatives to the Jumping Jack?

Man Maker, Wall Ball, and Barbell Thruster train the same primary muscles as the Jumping Jack. Pick whichever one suits the equipment in front of you.