Inclusion Criteria:  Healthy participants Good medical history without injury or chest pain in the past year No surgeries in the previous year.  Exclusion Criteria:  Upper body mass index 30 Kg/m2 Level of professional or elite sports activity Hyperventilation / hypercapnia and score above 23 points on the Nijmegen questionnaire Present any contraindication regarding the WB-EMS/EMS Viral o bacterial infections Arterial circulatory disorders, advanced arteriosclerosis Women during their menstrual period Type I diabetes, hemophilia, bruises, bleeding, cognitive deficit, fibromyalgia, congenital diseases with muscle-skeletal alterations at the level of the back and lower extremities, scoliosis, protrusion or disc herniation, medication consumption, abdominal surgeries (scars or keloids), abdominal muscle injury. Presence of chronic low back, hip or thigh pain