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plank jacks — video demonstration

Plank jacks: step-by-step guide with video, three form cues, common mistakes and how many reps to start with. Beginner bodyweight abs exercise, no equipment.

watch for these things

  • Keep your shoulders stacked over your elbows while only your feet move.
  • Land softly on the balls of your feet, knees slightly bent, like hopping on a quiet floor.
  • Brace your belly before each jump so your hips do not bounce up and down.

→ full plank jacks guide — step-by-step instructions, muscles worked & all form tips

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