Plate Twist

How to do it

Lie down on the floor or an exercise mat with your legs fully extended and your upper body upright. Grab the plate by its sides with both hands out in front of your abdominals with your arms slightly bent.
Slowly cross your legs near your ankles and lift them up off the ground. Your knees should also be bent slightly. Note: Move your upper body back slightly to help keep you balanced turning this exercise. This is the starting position.
Move the plate to the left side and touch the floor with it. Breathe out as you perform that movement.
Come back to the starting position as you breathe in and then repeat the movement but this time to the right side of the body. Tip: Use a slow controlled movement at all times. Jerking motions can injure the back.
Repeat for the recommended amount of repetitions.

What muscles does the Plate Twist work?: Mainly the abs.
What equipment do I need?: Other equipment.
Is it good for beginners?: It is rated intermediate level.
How do I track progress on it?: Log each set and beat the weight or reps from last time. Liftrung shows your last set beside the next one and estimates your one-rep max from your sets.

Exercise descriptions: free-exercise-db, public domain.