| 摘要 |
A flat board section 1 with a flat top surface 1a, which is formed as a flat surface, is made of a wooden board with sufficient thickness and strength for supporting a human body. A top surface 1a of flat board section 1 is octagonal and has an area which enables both feet or buttocks of a person to be placed thereon. A fulcrum section 2, which made of metal and has a hemispherical protrusion 2a, is provided at a central part of a bottom surface 1b of flat board section 1. Protrusion 2a is the part which always contacts with a floor surface or the ground when flat board section 1 is placed on the floor surface or the ground and is the part which serves as the center of winging of flat board section 1. The invention presents a health equipment by which the lack of exercise can be resolved in a simple manner at home and regardless of athletic ability.
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