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

This is a rotational core exercise that will help you resist too much rotation of your lumbar spine.

• Stand with your feet slightly wider than hip-width holding a 10-pound dumbbell.
• Squat and twist to the right, bringing the weight to the outside of your right knee.
• Exhale and twist to the left while raising your arms overhead, pivoting on your right foot. This completes one rep.