Performing the: A Step-by-Step Tutorial Alternate Oblique Crunch
Place your hands behind your head, with your elbows pointing outwards.
Engage your abdominal muscles, and lift your upper body off the ground, while simultaneously lifting your right knee towards your left elbow, trying to touch them together.
Lower your body back to the starting position, and then repeat the movement with your left knee and right elbow.
Continue alternating sides for the desired number of repetitions, ensuring to keep your abdominal muscles engaged throughout the exercise.