This device is provided with a main body (12), a first electrode (13) situated in a graspable section of the main body (12), and a second electrode (14) situated in an edge portion (121) of the main body (12) and having a concave curved section, and is configured such that the first electrode (13) and the second electrode (14) can form an external circuit through which it is possible for electrical current to flow via the human body.
