As you gently build up the speed, measured in revolutions per minute (rpm) the greater the torsion and dynamic forces acting upon your wrist, lower and upper arm muscles, depending on the arm orientation and direction of spin. The Powerball gyroscope can aid those athletes in disciplines that require strong arms, shoulders or grip. When the Powerball is simple but very effective resistance training. This means the powerball can be used in a fitness sense for the arms, wrists and shoulders helping to build, tone and define muscle. The gyroscope will respond with a rolling action and the speed of the device ranges from 2000 rpm to 16000 rpm and at this highest speed it is calculated that 40lbs of resistance is being generated. The "ball" consists of a plastic outer casing, often with a rubber grip around the centre. The Powerball gyroscope can aid those athletes in disciplines that require strong arms, shoulders or grip. When the Powerball is a handheld gyroscope device that is spreading across the world and it may just end up rivalling the Rubik cube! It's a handheld device that can be used by anyone with hands big enough

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