Gyrating muscles

Mitsubishi Precision of Japan has fitted weightlifters’ barbells with gyroscopes to provide a more balanced work-out. A small motor drives the gyro inside one of the spheroidal weights, powered by batteries inside the other. “When you exercise with normal barbells you are just fighting gravity,” says Hajime Sone of Mitsubishi. “But with the gyro, you are exercising against a lateral force as well,
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