Kneel on all fours with knees under hips and hands under your shoulders. Inhale.
Exhale as you slowly sit back on your heels, pulling your abdominal muscles in, rounding your back and shoulders.
Inhale as you bring your hands in under your shoulders, then exhale as you press your hands down and forward to push your shoulders back towards your hips.
Breath normally and hold the position for at least 20 seconds before extending your arms and returning up onto all fours.
The Shell Stretch is a great lower and upper back move and an effective way to get your muscles to release after targeting that area with various exercises. This is a simple yet effective way to get a muscles to release while still staying focused on your form and Pilates breathing. Add this movement into a Pilates core routine to provide a good cool down or a moment for muscle recovery.