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.
A 30-50 minute charge is apparently good for 2.5 hours of lifting, and according to the company the 1.2mm amplitude is enough to amp your training by up to 50 per cent. I’m not too sure about those claims, but if you want to test them out yourself, go ahead — they cost from $US1060 to $US1190 for the 1.5kg, 2.8kg and 4.6kg pairs. [ProIdee via OhGizmo]