Lie on the floor or a mat on your back, with knees bent and hands behind head. Feet should be flat on the ground. Keep a space between your chin and chest (looking diagonal towards the ceiling).
EXHALE: As you lift up, rotate upper body toward one side, then rotate back to center.
INHALE: Lower your back to the floor. Alternate sides.
Don't use your hands and arms to help lift you up - use abdominals and hips.
Muscles Worked: Abs, Obliques