In the recent decades, low fat and high carbohydrate diet has become very popular, but they failed to solve the obesity problem effectively. What is the best training? In the fitness boom, many new training programs that are different from the traditional strength and aerobic training have surfaced. This article focuses on a combination of exercise routine and diet, detailing high-intensity interval training methods, and low-carbohydrate diet plans. The first part is to explain the high-intensity interval training, the training benefits, implementation, and attention necessary for execution and such. The second part introduces the diet plan, glycemic index food selection, and processed foods avoidance. Finally, nutiritonal supplement for before, during, and after exercise, is introduced. This is a reference for readers who are pursuing a perfect body condition and health.