Peak Pilates Master Trainer Colleen Glenn demonstrates the correct setup for the Long Stretch Series, a group of exercises designed to work to stabilize the core. The first exercise in this series is Long Stretch. This exercise is intended to strengthen the Powerhouse with resistance on the moving base of the reformer. Elephant is the next exercise in the Long Stretch Series. The goal of Elephant is to move out and in from the Powerhouse, strengthen the hips, buttocks and inner thighs. Elephant also works on alignment. The final exercise in this series, Stork, prepares the body for unilateral movement in preparation for more advanced movements.