Performing the: A Step-by-Step Tutorial Half Sit-up
Place your hands behind your head, with your elbows pointing out to the sides.
Engage your abdominal muscles and lift your upper body towards your knees, but only half the distance compared to a full sit-up.
Pause at the top of the movement for a second, making sure to keep your core engaged.
Slowly lower your upper body back down to the starting position, completing one rep of the half sit-up. Repeat this exercise for your desired number of repetitions.