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2days ago I bought myself a POWERBALL :)

powerball.JPG

It is a ball with a electromagnet inside, this ball (inside) turns at speeds of easy 10000rpm (World Record my human 16rpm).

The harder it turns the heavyer the electromagnet gets, it also get harder on your arm to ceep it turning.

Its a great toy if you can't get out off the sofa or pc to get some upperbody training =)

No batterys inside, pure human power =)   (example video, btw thats not me in the video)

 

 

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