To obtain comfortable sleep by arranging heterogeneous materials, which have a potential difference, on the side that is in direct contact with a human body in such bedding as a futon mattress, a mattress, a sheet, a blanket or a blanket made of toweling, a quilt cover, a hem cover of quilt, a pillow, a pillow case, and pajamas, sending a weak electric current, which passes through between the heterogeneous materials, to the human body while he/she is asleep so that it gives stimulation, by smoothes its blood current of capillary and promotes the activation of cells, at the same time, by burning the energy with the accumulated subcutaneous fat so that it promotes removal and restraint of excessive subcutaneous fat, by eliminating a potential difference between the human body and the bedding to remove static electricity, which is likely to accumulate, so that it prevents harmful materials, which are floating in the air, from adhering to the bedding, the skin or the like and by removing muscular fatigue.

At least two or more kinds of materials, which have a potential difference at an appropriate position where the skin touches in bedding, are arranged without being in contact with each other. Then the arrangement of at least two or more kinds of materials that have a potential difference against the bedding is arranged with adhesive agency, compression, steam pressure, printing type or weaving type.