Who knew that something like dumbbells could actually move forward in the digital world by getting a contemporary upgrade? At least, that’s what the Revolution Dumbbell offers - allowing one to digitally adjust the weight by rotating a dial and pushing some buttons. Deep inside are small balls that spin, where the faster they spin, the more weight they generate.

I wonder what the battery life is like on that thing, but it is one way to carry around your exercise equipment without being bogged down by all the weight.

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Orginal post by Brooke Crothers