You can add weight to this exercise by holding a dumbbell, kettlebell, medicine ball, or plate.

• Lie flat on the floor with your knees bent. Your feet don’t have to be flat on the floor. You can also have only your heels on the floor.
• Your hands can be wherever you’d like–across your chest, by your head, or by your side.
• Use your abs to sit up, and rotate to either side by bringing your right elbow to your left knee, or vice versa.
• Lower yourself back down to the floor while keeping your abs tight.
• You can do all reps one side, then the other. Or you can alternate sides with each rep.