Get your abs working overtime with this exercise from trainer Phil Fusco.

Arm pull-over straight-leg crunch - Women's Health & Fitness

Targets: Upper back, abs, and hips

How to: Grab a pair of four to five kg dumbbells and lie on your back with your arms stretched behind you.

Raise your legs to a 45-degree angle. Bring your arms up over your chest and lift your shoulders off the mat while raising your legs until they’re perpendicular to the floor.

Return to starting position without letting your legs touch the floor. That’s one rep.

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