Here’s a move from Women’s Health that I tried the other day. The added weight will definitely have you feelin’ the burn. This move works not only your abs, but also your hips and upper back.

Start lying on your back with a set of 10- to 12- pound free weights.

Raise your legs to a 45-degree angle with your arms over your head to get to the starting position shown in image A.

At the same time, lift your legs until they’re perpendicular to the floor and reach your arms over your chest and toward your toes, lifting your shoulders off the floor.

Return to the start, never letting your legs touch the floor and continue for 3 sets of 15 reps.