Inclusion Criteria:  Healthy male adults. Age between 20-25. Have normal body mass index (BMI). Physically active (i.e., exercise regularly for at least three times per week) and total score more than 600MET-min/week based on The International Physical Activity Questionnaire (IPAQ). VO2max value above 42 ml/kg/min during cycling test (Above fair VO2max level)(American College of Sports Medicine, 2010).  Exclusion Criteria:  BMI is greater than 25kg/m2. Have exercise-related disorders such as coronary heart disease, peripheral vascular diseases, rhabdomyolysis, respiratory inflammation, or have neurological disorders. Have implanted electrical devices. Have significant cognitive impairment.