How To Perform The Single-Arm Plank

This core exercise targets your abs, obliques, lower back muscles, and shoulders.

1. Lock your ribs down with your abs.
2. Tuck your tailbone between your knees.
3. Do not let your lower back sag.
4. Move your arms alternately without arching your back, flaring your ribs or rolling your hips.

Instruction courtesy of Precision Nutrition. Fitness Pros- If you’re interested in becoming a Certified Nutrition Coach, they’re top notch!