Muscles

Japan is going through an unprecedented muscle boom. People go to the gym, buy salad chicken to build muscle, and watch muscle exercises on TV. Why are Japanese people fascinated with muscles right now? Are what is appealing to foreigners and what Japanese people consider to be ideal different? The differences between the muscles that Japanese people and foreigners like and the admiration for muscles not only by men but Japanese women as well. Is Japanese people's muscle worship cool from the world's perspective?