Alternating Single-Leg Arm Bent-Knee Under Crunch

Setup

• Lie flat on your back on a mat with your legs extended.

• Reach your arms fully overhead, extending your body into a straight line.

Movement

• Simultaneously lift your upper body and one leg toward the ceiling.

• Bring your arms forward to reach toward the elevated foot, engaging your core to lift your shoulders off the mat.

• Keep the non-working leg straight and hovering slightly above the floor.

• Lower back down to the starting position with control, keeping your core engaged throughout.

• Alternate legs with each repetition, reaching toward the opposite foot as you perform the movement.