BICYCLE

The technical result of the present invention is the possibility to immobilize the physiological curves in the cervical and lumbar regions of the spine, i.e. to implement the "healthy spine" principle. This technical result is achieved using a bicycle that comprises handle bars, wheels, a pedal mechanism and a seat with a back, which are mounted on a frame, wherein the seat back is provided with pads capable of vertical movement, the back is mounted so that the inclination angle thereof relative to the seat can be adjusted, the pads may have a constant volume or a variable volume, and the handle bars are mounted so that the vertical and horizontal position thereof as well as the inclination angle relative to the seat can be adjusted.