Muscles worked
Full body, cardiovascular system.
Why jumping jacks works
Moving your arms and legs through a full range simultaneously raises your heart rate quickly while also taking your shoulders and hips through motion, which is why it's such a common warm-up choice — it primes both your cardiovascular system and your joints for what follows.
How to do jumping jacks
- Stand with feet together and arms at your sides.
- Jump your feet out wide while raising your arms overhead.
- Jump back to the start.
- Keep a steady rhythm.
- Land softly through the balls of your feet.
Form tips
- Stay light on your feet.
- Keep a steady breathing rhythm.
- Step side to side for a low-impact version.
Common mistakes
- Landing with stiff, locked knees.
- Slouching.
- Going so fast you lose rhythm.
Who should modify or avoid this
The repeated impact isn't ideal for anyone with joint pain, ankle issues, or in later pregnancy — the step-jack (no-jump) version delivers a similar warm-up effect with far less impact.
Sets and reps
3 sets of 30–45 seconds. Great as a warm-up or cardio interval.
Variations & progressions
- Easier: step jacks (no jumping).
- Harder: faster pace or add a squat.
- Try star jumps for more power.
Looking for a full routine? Try our beginner bodyweight workout.