Jumping Jack
The jumping jack is a classic bodyweight cardio exercise that elevates the heart rate through repeated jumping and arm raises. It is used as a warm-up, in conditioning circuits, or as a standalone cardio movement.
How to do it
- Stand with your feet together and arms at your sides.
- Jump your feet out to the sides while simultaneously raising your arms overhead.
- Jump back to the starting position, bringing your feet together and arms back to your sides.
- Maintain a steady rhythm and keep your knees slightly bent to absorb the impact.
- Repeat for the desired number of repetitions.
Form cues
- keep knees soft
- land quietly on balls of feet
- reach arms fully overhead
- maintain a steady rhythm
- keep core engaged
Breathing: Inhale as you jump your feet out, and exhale as you bring them back together.
Common mistakes
- landing flat-footed which increases impact on joints
- holding breath which limits oxygen flow
- letting knees cave inward which stresses ligaments
- rushing the movement which leads to poor form
Muscles worked
Primary: cardio. Secondary: quads, calves, shoulders.
Suggested sets & reps
Get fitter
3–4 sets × 30–45 seconds, rest 45 s
Lose weight
3–4 sets × 45–60 seconds, rest 30 s
Build muscle
3 sets × 20–30 reps, rest 60 s
Easier, harder & alternatives
Take care if…
- If you feel sharp pain in your joints, stop immediately.
- If you have pre-existing knee or ankle concerns, choose a low-impact variation.
- If you feel dizzy or lightheaded, slow down or take a break.
General educational guidance, not medical advice. Stop on sharp pain and check with a qualified professional if unsure.
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Start free →Frequently asked questions
Can I do jumping jacks if I have bad knees?
If you feel discomfort in your knees, try a low-impact alternative like a lateral shuffle or step-out jacks to reduce joint stress.
Should I wear shoes for jumping jacks?
Yes, wearing supportive athletic shoes provides necessary cushioning and stability for your feet and ankles during impact.
Why do I feel out of breath so quickly?
Jumping jacks are a full-body cardiovascular movement; it is normal to get winded quickly. Focus on a steady, sustainable pace.