Science Museum: Strength Ball

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  Brilliant fun

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I was bought this as an unexpected Xmas present, and it's brill! Took me a few tries to get it spinning at first, but once it's going, it's going! You have to concentrate on your coordination if you want to get the highest RPM and it really works, making your wrists stronger and more coordinated. Not only does it increase strength, but it's also a lot of fun trying to out do one-another!