Instructions:
- 1Start by getting into a plank position on the padded stool, with your hands directly under your shoulders and your body forming a straight line from head to heels
- 2Jump your feet out wide, as if doing a horizontal jumping jack
- 3Quickly jump your feet back together, maintaining the plank position
- 4Continue the 'jacking' motion for the duration of the set
Tips:
- Keep your body straight and tight during the movement
- Try to perform the exercise as quickly as possible, while maintaining proper form
- Engage your core throughout the movement
- Avoid sinking or arching your lower back