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Line illustration of the Jumping Jack

Movement Library

Jumping Jack

Trains
Conditioning
Difficulty
Beginner
Measured in
Time

How to perform

  1. 1Jump your feet wide as your arms swing overhead, then back together.
  2. 2Stay light on the balls of your feet and find a steady rhythm.

Technique in detail

Stand tall with your feet together and arms at your sides. Jump your feet out to just past shoulder width while swinging straight arms up until your hands meet overhead, then jump back to the start as the arms come down. Land softly on the balls of your feet with a slight bend in the knees, and let each landing flow straight into the next jump. Find a rhythm you could hold for the full interval and breathe in time with it — the jumping jack is a pacing exercise, and it rewards smooth far more than frantic.

Common mistakes

  • Landing flat-footed with straight knees. Every rep should be nearly silent — if you can hear your heels, soften the knees and stay on the balls of the feet.
  • Cutting the arm swing short at shoulder height. Taking the hands all the way overhead is half the exercise; shortening it turns a full-body movement into a leg bounce.
  • Sprinting the first twenty seconds and stalling. Pick a tempo you can hold for the whole set — the conditioning comes from the minutes, not the first burst.

Equipment

  • No equipment

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This library is general fitness education, not medical advice. If you are pregnant, injured, or managing a health condition, check with a clinician before starting something new. Stop if a movement hurts.