by Frank J Single-Arm Plank May 20, 2021 Combination, Core Work Check Price Men’s Single-Arm Plank Lock your ribs down with your abs. Tuck your tailbone between your knees. Do not let your lower back sag. Move your arms alternately without arching your back, flaring your ribs or rolling your hips. ADVERTISEMENT Facebook Facebook Comment Single-Leg Plank Salute Plank Related Posts Renegade Row Best Bodyweight Exercises For Adults Single-Arm Dumbbell Reverse Lunge to Romanian Deadlift