I first bought the Powerball to try and get stronger without having to go to the gym. The Powerball helped me achieve this, as well as bringing a sense of fun and competition to exercise. The Powerball is a relatively small sphere, with a gyroscope in the center. It comes with a starting cord, which is used to get the device spinning and then this gyroscope is accelerated by rotating the wrist at an exponential rate. As the Powerball spins, faster and faster it makes a whiring sound, similar to that of a jet engine(obviously not as loud). The Powerball is good at exercising muscles in the arm/wrist region and you will gradually be able to reach faster speeds as you get used to it. It also recommend for rehabilitation from sporting injuries. One negative with the Powerball is it takes a while to learn how to get it spinning. Also the centre gets hot at very high speeds and this can lead to blisters on your hand. Despite this, an excellent, innovative and fun product.

* i also published this review on ciao under the username pie12345