of the apparatus according to the embodiment described with reference to fig7 a fig7 a schematically illustrates an exercising device 70 for skeletal mobility recovery and slimming provided with foldable element or means according to another embodiment of the present invention device 70 comprises two or more individual movable or rotatable units such as units 71 a 71 e rear and front stands made of suitably rigid material adapted to permit placement of the apparatus on a generally flat supporting surface such as a floor such as rear stand 73 and front stand 74 each of the individual movable units such as units 71 a 71 e comprises the following main elements an endless belt a supporting surface and rolling mechanism the elements of each unit are connected and operated in similar manner to the structure of the device of the present invention as described hereinabove preferably but not limitatively each of the units 71 a 71 e can be operated individually actually each movable unit 71 a 71 e is a resized structure of the device of the present invention but in a shorter or smaller size for example the dimension of the upper outer surface of the endless belt i e the area used for performing the activities is about 100 cm in width and about 40 cm in length of course the length as well as the width of the activity.