Old, new models of 'Bullworker' fitness device shown together

Old, new models of 'Bullworker' fitness device shown together

Shown in this photo taken in Tokyo on Dec. 26, 2014, are (from top to bottom) Fukushima Hatsujo Seisakusho's first model of the "Bullworker" fitness device released half a century ago in Japan in 1965, and the latest models for men and women, respectively. (Kyodo) ==Kyodo

Old, new models of 'Bullworker' fitness device shown together

Old, new models of 'Bullworker' fitness device shown together

Shown in this photo taken in Tokyo on Dec. 26, 2014, are (from top to bottom) Fukushima Hatsujo Seisakusho's first model of the "Bullworker" fitness device released half a century ago in Japan in 1965, and the latest models for men and women, respectively. (Kyodo) ==Kyodo

Pocket-sized 'Bullworker' fitness gear developed by Fukushima firm

Pocket-sized 'Bullworker' fitness gear developed by Fukushima firm

A 13-centimeter "Miniworker," a small-sized "Bullworker" fitness device, shown in this file photo taken in Tokyo on Dec. 9, 2014, is the product of Fukushima Hatsujo Seisakusho in Nihonmatsu, Fukushima Prefecture, northeastern Japan. (Kyodo) ==Kyodo

Old Japanese ad for 'Bullworker' still kept

Old Japanese ad for 'Bullworker' still kept

The Japanese-language version (R) of an advertisement for the first model of the "Bullworker" fitness device is shown in this file photo taken on Dec. 29, 2014. Its manufacturer Fukushima Hatsujo Seisakusho based in Nihonmatsu, Fukushima Prefecture, northeastern Japan, created the ad based on the original English version when it released the first model half a century ago in 1965. (Kyodo) ==Kyodo

'Bullworker' maker's president demonstrates 1965 model

'Bullworker' maker's president demonstrates 1965 model

Shoichiro Sato, president of Fukushima Hatsujo Seisakusho, a manufacturer of springs and "Bullworker" fitness devices based in Nihonmatsu, Fukushima Prefecture, northeastern Japan, shows in Tokyo on Dec. 26, 2014, the way to use the company's first model released in Japan in 1965, exactly half a century ago. He says only a 7-second workout makes him tired. (Kyodo) ==Kyodo