Performing the: A Step-by-Step Tutorial Russian Twist
Hold your hands in front of you and pull your stomach in tight, then lift your feet off the ground, crossing them at the ankles and balancing on your butt.
Twist your torso to the right and touch your right elbow to the ground next to your body.
Next, twist your torso to the opposite side and touch your left elbow to the ground.
Continue alternating sides, doing the exercise for a set amount of time or for a specific number of repetitions.