The situp with rotation is an exercise that targets the abdominal muscles, particularly the rectus abdominis or six-pack muscles. It is a of the traditional situp that adds an element of rotation to the movement. This helps to work the obliques as well as the rectus abdominis, and can help to create a more defined abdominals, To perform the situp with rotation, start by lying on your back with your knees bent and your feet flat on the floor. Place your hands behind your head and engage your core. Slowly sit up, twisting your torso to the right as you do so. Pause for a moment at the top of the movement, then return to the starting position. Repeat the movement to the left side, The situp with rotation can be performed for a number of repetitions, or as part of a circuit training workout. It is a challenging exercise, but it is also a very effective way to target and strengthen the abdominal muscles.