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The HIT MethodAn independent guide to high-intensity training

Jumping Jack: How to Do It, Muscles Worked and Easier Options

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The jumping jack is a high impact, beginner level exercise that requires no equipment. You will jump your feet out and in while your arms sweep overhead. This classic move directly targets your calves, hip abductors, and deltoids.

As you perform jumping jacks, your quadriceps and gluteus medius work as supporting muscles to stabilize your lower body. It is an efficient way to challenge your cardiovascular system while conditioning multiple muscle groups at once.

Exercise data

Impact
High
Level
Beginner
Equipment
None
Main muscles
calves, hip abductors, deltoids
Also working
quadriceps, gluteus medius
Movement
Jumping the feet out and in while the arms sweep overhead
Low-impact swap
step jack, tapping one foot out at a time

How to do a jumping jack

Stand tall with your feet together and your arms resting flat at your sides. Keep your spine neutral and look straight ahead.

  1. Bend your knees slightly to prepare for the jump.
  2. Jump both feet outward so they land wider than shoulder width apart.
  3. Simultaneously sweep your arms out and upward until your hands meet above your head.
  4. Push off the balls of your feet to jump back to the starting position.
  5. Lower your arms back to your sides as your feet come together.

Form cues

  • Land softly on the balls of your feet.
  • Keep a slight bend in your knees.
  • Maintain a braced core throughout the movement.
  • Move your arms through a full range of motion.

Common mistakes

  • Stiff knees. Keep your knees slightly bent as you land to absorb the high impact. Locking your joints can cause unnecessary stress.
  • T-rex arms. Extend your arms fully as they sweep overhead. Half movements reduce the work required from your deltoids.
  • Flat feet. Stay on the balls of your feet rather than letting your heels slam into the floor. This allows your calves to properly absorb the shock.
  • Slouching forward. Keep your chest up and your gaze forward. Bending at the waist throws off your balance and minimizes core engagement.

Easier and harder versions

Easier

  • step jack, tapping one foot out at a time

Harder

  • Increase the pace of your jumps
  • Perform the movement for a longer duration

Using it in intervals

When programming the jumping jack into your intervals, use it to push your heart rate during active work periods. Because it is a beginner move, you can maintain a fast, continuous pace for longer durations. As you become tired, your arms may start to drop and your landings might get heavy. Focus on your breathing and actively engage your core to sustain proper form, ensuring you land softly on every single repetition.

Formats that suit this move: Tabata Workout, 30/30 Intervals.

Impact note. This move involves jumping. If impact bothers your knees, ankles, back or pelvic floor, use the low-impact swap: step jack, tapping one foot out at a time.

Similar moves

Curious about energy use? See calories burned: jumping jacks.

When to stop and see a doctor

  • Sharp pain in your knees or ankles upon landing
  • Sudden dizziness or lightheadedness
  • A grinding sensation or pinching in your shoulder joints
  • Unusual shortness of breath that feels restrictive

This page is general information, not medical advice. If you have a heart condition, high blood pressure, joint problems, are pregnant or have been inactive for a long time, talk to your doctor before starting vigorous exercise.

How this page was made. Exercise data (impact, level, equipment, muscles) was compiled by our editors as a general anatomy and coaching guide. Text drafted with AI assistance and checked by the Training Desk; see how we write. Last checked October 2026.