Butterfly Crunch
EXERCISE TUTORIALS: CORE
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20s
Lie on your back with your hands behind your head and the soles of your feet touching, so your legs form a diamond. Tuck your chin toward your chest, and then on an exhale, pull your sternum/ribs down toward the bellybutton as you curl your chest off the floor a few inches. Keeping your back flat and your abs tight, slowly lower back to the floor.
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