To exercise the parts of the body in which fat accumulates, and help users improve their physical condition, a revolving hammock has been invented in 1924.
It was said to stretch the spine and the muscles, stimulate circulation, and reduce weight. The device consists of a metal framework, with stirrups at one end and head grip at the other. A strap goes under the chin. Canvas webbing, shaped like a “Y”, supports the body.
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