Editing Jumping jack (section)

===Power jacks===
Power jacks are like jumping jacks, but land in a wide squat position. As with other jumps, jumping out of a deeper squat position increases the intensity of the exercise, and this can result in injury if proper form is not maintained in the deep squat position between successive jumps. Power jacks can be performed over multiple counts to pull the legs back to center, with two small incremental jumps to return to the starting position.