Tone your abs and shoulders with this key move.
- Begin in a plank position with your hands on the ground and a slider under each foot.
- Maintaining a straight line from head to toe, engage your core and slide your right foot in toward your chest.
- Slide your left foot to meet your right. Then, slide your right foot back to start position, followed by your left.
- Perform three sets of six to eight reps per side.