As being obesity is associated with numerous health problems, effective fat loss strategies are required. Although dieting has been the major fat loss method, aerobic exercise programs have been shown to increase cardiorespiratory fitness and preserve fat-free mass. Most aerobic exercise interventions have consisted of moderate-intensity steady-state exercise. Disappointingly, these kinds of exercise programs have resulted in minimal fat loss. In contrast, high-intensity intermittent exercise (HIIE) has been shown to result in greater fat loss. Accumulating evidence suggests that high intensity intermittent exercise (HIIE) has the potential to be an economical and effective exercise protocol for reducing fat of overweight individuals, especially Tabata workout and Crossfit.