Jumping Jacks / Star Jumps: How to Do It, Muscles Worked & Benefits

beginnerHomebodyweightQuads

Jumping Jacks / Star Jumps – start position

Jumping Jacks / Star Jumps – end position

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Jumping jacks and their bigger cousin, the star jump, are classic full-body cardio moves. They warm you up, raise your heart rate and are perfect for home circuits and HIIT finishers.

Primary musclesQuads

SecondaryCalves, Glutes, Hamstrings, Shoulders

Equipmentbodyweight

Levelbeginner

Typecompound

Movementpush

WhereHome

What is the jumping jacks / star jumps?

Jumping jacks and their bigger cousin, the star jump, are classic full-body cardio moves. They warm you up, raise your heart rate and are perfect for home circuits and HIIT finishers.

The jumping jacks / star jumps is beginner-friendly and a compound movement. Compound exercises use several joints and muscle groups at once, so they let you move more weight, burn more energy and build functional strength in less time. You can do it at home with no or minimal equipment, which makes it easy to fit into almost any routine.

Muscles worked

The main muscles trained by the jumping jacks / star jumps are the quads, with help from the calves, glutes, hamstrings, shoulders.

Quads (primary)

The quadriceps are the four muscles on the front of the thigh. They straighten the knee and are the main movers when you stand up from a squat, climb stairs or jump.

Calves (secondary)

The calves are made of the gastrocnemius (the visible upper part) and the soleus (underneath). They point the foot and are essential for walking, running and jumping.

Glutes (secondary)

The glutes (gluteus maximus, medius and minimus) are the largest and strongest muscles in the body. They extend and rotate the hip, power sprinting and jumping, support the lower back and shape the hips.

Hamstrings (secondary)

The hamstrings run down the back of the thigh. They bend the knee and extend the hip. Strong hamstrings protect the knees and balance out the quads.

Shoulders (secondary)

The shoulders (deltoids) have a front, side and rear part. They lift the arm in every direction. Well-developed side and rear delts make the upper body look wider and help keep the shoulder joint healthy.

How to do the jumping jacks / star jumps: step by step

Begin in a relaxed stance with your feet shoulder width apart and hold your arms close to the body.
To initiate the move, squat down halfway and explode back up as high as possible. Fully extend your entire body, spreading your legs and arms away from the body.
As you land, bring your limbs back in and absorb your impact through the legs.

Coach’s note: Practice the first sessions with a light load or an easier variation. Perfect technique first, then add reps, then add weight.

Benefits of the jumping jacks / star jumps

Excellent warm-up that raises body temperature
Fast cardio with no equipment
Trains coordination and calf strength
Easy to fit into any circuit

Like all resistance training, the jumping jacks / star jumps also contributes to the general health benefits of strength work: stronger bones, better blood-sugar control, improved mood and a higher resting metabolism over time. The U.S. Physical Activity Guidelines recommend muscle-strengthening activities for all major muscle groups on two or more days per week for adults.

Common mistakes to avoid

Landing stiff-legged
Landing on the heels
Slouched posture
Going too long and getting sloppy

Most of these mistakes happen when the weight is too heavy or when you rush. Film one set from the side with your phone. It is the fastest way to spot form problems without a coach.

Form tips from a trainer

Land softly on the balls of your feet with slightly bent knees
Keep the core tight
For star jumps, jump up and spread arms and legs into an X shape
Low-impact option: step out side to side

How to breathe

Breathe in as you lower the weight or your body (the easier phase) and breathe out as you push. For heavy sets, take a big breath into your belly before the rep, brace your core, and breathe out near the end of the push.

Sets and reps by fitness level

Level	Sets × reps	Rest	Frequency
Beginner	3 × 30 sec	60–90 sec	2× per week
Intermediate	4 × 45 sec	60–120 sec	2× per week
Advanced	4 × 60 sec	90–180 sec	2–3× per week

Choose a load or variation where the last 1–3 reps of each set feel hard but your form stays clean. When you can do the top of the rep range for every set, make it harder: add weight, add reps, slow the tempo or move to a harder variation. This is called progressive overload, and it is the main driver of strength and muscle gains.

Easier and harder variations

Make it easier

Step jacks (no jumping)

Make it harder

Star jumps
Seal jacks
Longer intervals

Jumping Jacks / Star Jumps for men and women

The technique of the jumping jacks / star jumps is the same for men and women. The difference is in programming. Men often aim for more upper-body size and use heavier loads with lower reps, while many women prefer more lower-body and glute volume and moderate loads with higher reps. Both approaches work. Muscle responds to effort and progressive overload regardless of gender, and women typically recover a little faster between sets.

You will find this exercise in these HelloMyTrainer programs:

Safety tips

Warm up for 5–10 minutes before your first working set: light cardio plus a few easy reps.
Stop immediately if you feel sharp, stabbing or joint pain. Muscle burn is normal; pain is not.
If you have an injury, are pregnant, or have a heart, blood-pressure or joint condition, ask your doctor or a physical therapist before doing this exercise.
Make sure benches, chairs, steps and bars are stable and can hold your weight.

Frequently asked questions

What muscles does the jumping jacks / star jumps work?

The jumping jacks / star jumps mainly works the quads, with the calves, glutes, hamstrings, shoulders helping.

Is the jumping jacks / star jumps good for beginners?

Yes. It is a beginner-friendly exercise. Start with the beginner sets and reps above and focus on clean technique.

How many sets and reps of the jumping jacks / star jumps should I do?

Beginners: 3 × 30 sec. Intermediate: 4 × 45 sec. Advanced: 4 × 60 sec. Train each muscle group about twice per week.

Can I do the jumping jacks / star jumps at home?

Yes, it needs little or no equipment.

How often should I train with the jumping jacks / star jumps?

Two to three times per week is ideal for most people, with at least 48 hours between hard sessions for the same muscle group.

In a reverse lunge you step backward instead of forward.

Exercise images: public-domain photos from the open-source Free Exercise DB project. Last reviewed: October 2026.