Hi Teo T -- Natalia from the Pilates Anytime Team here. I am also a certified instructor!
Because the beginning of the class requires a lot of room for the spine, along with placing the Magic Circle on a flat surface for reaches, we would recommend only performing this abdominal warm-up on the Mat to ensure safety and effectiveness of the workout.
If you have any additional questions, please feel free to reach out to us at support@pilatesanytime.com