How to do it
Drive your planted hand firmly into the floor to stabilize your shoulder.
- 1
Begin in a high plank position with your arms straight, hands under shoulders, and body forming a straight line from head to heels.
- 2
Quickly draw your right knee towards your left elbow, crossing your body.
- 3
Return your right foot to the starting position.
- 4
Repeat the motion with your left knee to your right elbow.
- 5
Alternate sides in a quick, controlled manner for the desired number of repetitions.
Expert tip
Keep your core engaged and back flat throughout the movement to maximize the engagement of your abdominal muscles and minimize strain on your lower back.
Common mistakes
- ✕Hips hiking up toward the ceiling
- ✕Bouncing the hands off the floor between reps
- ✕Drawing the knee to the same-side elbow