Lose fat with high-intensity interval training (HIIT). If you're trying to lose weight fast, HIIT training can super-charge your metabolism for upwards of 24 hours after exercising. This means your body will continue burning calories long after you've ended your workout. HIIT burns more calories in less time than steady-state cardio. In one study, researchers looked at two groups, one running for 30 to 60 minutes three times per week, the other doing four to six 30-second treadmill sprints, resting for four to six minutes between each sprint. After six weeks, it was found that the group doing HIIT training lost more weight.
Eat polyunsaturated fats. While saturated fat leads to the body's retention of visceral fat, causing abdominal girth and excessive weight gain, studies have shown that a diet high in polyunsaturated fat helps promote the production of muscle mass instead of body fat. Polyunsaturated fats can also help reduce cholesterol levels in the body, lowering the risk of stroke and heart disease. Sources of polyunsaturated fats include: