Inclusion Criteria:  Healthy people Optimal cognitive abilities and mentally competent to participate in the study. In condition to complete the study questionnaires.  Exclusion Criteria:  Focal mononeuropathies in both upper and lower limbs Peripheral neuropathy. Patients with implanted functioning pacemakers / defibrillators. Patients with bleeding disorders. Patients being treated with anticoagulants. Patients on antiplatelet therapy. Present some of the contraindications for a treatment with NESA XSIGNAL®: pacemakers, internal bleeding, do not apply electrodes on skin in bad condition, with ulcerations or wounds, acute febrile processes, acute thrombophlebitis and / or electricity phobia. Not having signed the informed consent. Present any injury or pathology during the study