Abstract: A handle is composed of a left handlebar having a left gripping section, and a right handlebar having a right gripping section. The two gripping sections extend along a longitudinal axle of the handle and are respectively longer than the breath of the user's hand, i.e. the user can hold one of optional positions of the handle. Each of the two gripping sections has at least one contact face extending along the surface thereof. Each of the contact faces is electrically conductive but not in electrical connection with the others. The contact faces are respectively electrically connected to a particular processor of an exercise apparatus, such that the processor can scan the user's human electrical signals, like frequency of potential difference or impedance, and further transform the signals into corresponding human physiological characteristics.