How To Perform The Single-Leg Plank

This core exercise targets your lower back muscles, abs and obliques. Additional muscles activated are the glutes, arms, and outer thighs.

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!