Koormasana (Tortoise Pose) Koormasana (Tortoise Pose) Ghudam nirudhya ghulphabhyam vyutkramena samahitah/ Kurmasanam bhavedetaditi yogavido viduh// Press the anus firmly with the ankles in the opposite direction and sit well-poised. According to the Yogis this is called as Koormasana.