Place your hands behind your head, lightly supporting it with your fingers interlocked, but avoid pulling your neck.
Engage your abdominal muscles and then lift your upper body, including your shoulders and back, off the ground towards your knees, keeping your lower back on the floor.
Pause at the top of the movement for a moment, feeling the contraction in your abs, then slowly lower yourself back down to the starting position.
Repeat this motion for your desired number of repetitions, ensuring to maintain control and not rely on momentum.