Bison-1 is a forearm exercise equipment. It is the first exerciser that provides 3D (three-dimensional) movements, thus, simulation of natural human motions. About 30 muscles are involved in a strength workout simultaneously, and a complete quantity of possible exercise variations exceeds 100,000.
The Bison-1 forearm strength training exerciser was constructed by a Belarusian scientist Nikolai Sotsky in 1992. Bison-1 is often referred to as a gym in bag.