1. Kneel on a mat and place your hands on the floor slightly wider than shoulder-width.
2. On your forefeet, extend both legs back into a plank position.
1. Twist to bring one knee forward to the opposite elbow (i.e. bring your right knee to your left elbow and vice versa).
2. Extend the knee and return to plank position.
3. Repeat with opposite leg in an alternating manner.
1. Keep your core engaged, your hips low, and your head, neck and back aligned throughout the exercise.