The current invention relates to an exerciser, especially a crawling exerciser, comprising two hand slides each containing a wheel and two leg slides each containing a wheel, characterized in that, characterized in that it also contains components of a linear parallel track, wherein both the hand slides and the leg slides slide in the track and a damping structure is installed on the wheels or between the wheels and the track. The exerciser of the current invention is convenient, flexible, easy to control, and is easy to perform alternate movements of the hands and legs. It does not damage the floor, carpet or ground, and is very appropriate for indoor application.