I'm a Trainer: If You Want a Stronger Core, These Are the 11 Exercises You Need to Do

This is an anterior core stability exercise that will help prevent excessive arching of the lumbar spine.

• Begin in an elbow plank with your forearms resting on the top of a ball.
• Keeping your core strong and your body still, use your arms to roll the ball in a small clockwise circle. This completes one rep.