Study aim: Effect of Eight Weeks of two types of High-Intensity Interval Training on Appetite sensation, Appetite-related Hormones and Body Composition in Overweight and Obese Men Design: The present study is a randomized, 3 parallel-group trial without blinded outcome Settings and conduct: In a semi-experimental research project, among volunteer overweight and obese men (BMI > 25) at Tabriz University, with an age range of 20–30 years and no regular training in the past two years, 30 people will be randomly selected. After completion of the informed consent form, they will be randomly assigned into 3 groups of 10, including the high-intensity interval training group, the high-intensity interval functional training group, and the control group. On the first day, weight, height, BMI, and fat percentage will be measured by BIA, as well as VO2max and VVo2max using the Rockport and the 5-minute running test. Fasting blood samples as well as an appetite questionnaire with a visual analog scale (VAS) will be taken 48 hours before the first session and after the last session of training to determine the indicators of ghrelin, GLP-1, PYY, and the sensation of satiety. Also, the calorie intake and consumption will be measured before and after 4 and 8 weeks. Participants/Inclusion and exclusion criteria: Men with BMI over 25 Between 20-30 years old Without chronic diseases Without surgery last year No consumption of weight-loss and anti-inflammatory drugs during the last year Lack of weight loss during the last year(more than 10%) Lack of programmed training during last year Lack of medical limitation. Smoking and alcohol consumption Intervention groups: 3 groups of 10 people include the high-intensity interval training (HIIT) group, the high-intensity interval functional training (HIFT) group, and the control group (Con). Main outcome variables: changes in ghrelin, GLP-1, PYY, appetite, and body composition.