Terra wants to work on her core, and knows just how to do it. She explains to Chrissy Marie how a friend taught her this ab-standing exercise, and how it strengthens their abdominal and oblique muscles. Terra convinces 115lb Chrissy Marie to stand on her stomach, and while counting, Terra tightens her stomach muscles. After building up stamina, Terra makes it to 80 seconds! Chrissy Marie is intrigued, so she wants to try. But can she handle 150lbs of TerraMizu?

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