Shake Weights were found to be pretty useless in the past, but BodyVib’s weights could change that: they vibrate 2160 times per minute, which is 10 times faster than traditional ones.
France holds the world’s standard for the kilogram weight. It’s a cylinder-shaped object that has dictated all other kilogram weights for 130 years now. As it’s made from platinum-iridium, though, the US is concerned it’s no longer accurate. Whoops?