What is this floor exercise called? [see details].
This is done on a exercise mat on the floor. You keep your back and head on the mat, bend at the waist and support your hips with your hands, keeping your upper arms on the mat for support. With your feet thus sticking up toward the ceiling, you go through leg motions just like pedaling a bicycle. Can be done with just body resistance or with ankle weights as you build up.
What muscle groups does it target?
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