Music, Picking, strumming, holding, twisting, see marked increases in wirst and finger strength - essential for all musicians As you 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. A lifestyle choice... Your new NSD Powerball has so many functions, benefits and uses that purchasing one could almost be considered a lifestyle decision! Despite costing less than US$50.00 (or its equivalent in Euro), the compact little spheres have already defined themselves worldwide as superlative fitness instruments, definitive sports products and gentle, non impact rehabilitation tools all housed within a [product] that's so addictive and pleasurable to use it borders on being sinful..! All athletes need to build strength for certain sports, such as golf, tennis, baseball or any sport that demands powerful grip and strong arms. The basic theory centres around how gyroscopes act on the environment around them. Once a gyroscope has started, then it asserts a centrifugal force and inertia on objects in contact with it. The fact that you'll go "wow!" the first time you put a live one into your hand and then find it impossible

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    Powerball Gyro, Gyroscope, Neon Pro, Powerballs
    The Powerball Gyro builds strength in wrists, arms, shoulders and fingers with only 5 minutes use per day making remarkable increases in strength.