The move: Double leg stretch.

Works on: Abdominals.

David Sprague/Los Angeles Daily News (ENLARGE)
Trainer Mari Winsor demonstrates the setup of the Double Leg Stretch.
David Sprague/Los Angeles Daily News (ENLARGE)
In the extended position, lift head and shoulders, with legs at a 45-angle.
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Setup: Lay flat on your back with legs tucked into your chest. Hug your legs, placing your hands lightly on your shins.

Step 1: Lift up your head and shoulders. Extend both legs into a 45-degree angle and raise your arms straight up, above your head. Inhale as you extend your arms and legs as far as possible.

Step 2: Exhale as you return to your starting position.

Repetitions: Do this exercise 10 times.

Certified trainer, Mari Winsor began developing her innovative workout nearly 20 years ago and opened her first Pilates studio in 1990 in Los Angeles. She has co-written several books, and her series of Winsor Pilates DVDs have sold more than 5 million copies worldwide.

— Los Angeles Daily News