Vigorous aerobic exercise such as fast walking or jogging is great for blasting belly fat, but a total-body weight-training routine boosts results and firms your midsection even more. A 12-week Skidmore College study found that exercisers who did a high-intensity total-body resistance routine combined with cardio lost more than twice as much body fat--in particular, more than 4 times as much belly fat--compared with cardio-only exercisers. The resistance-training group also ate a high-protein diet, while the other group followed a traditional, moderate-protein eating plan. Researchers speculate that the extra fat loss may be due to the stepped-up calorie burn you get after lifting weights and the extra protein.
Bonus: You'll be less likely to regain lost pounds. "Whenever you lose weight, it typically comes from both fat tissue and muscle," explains Olson. "Resistance training helps maintain or even add muscle mass, which prevents a slowdown in metabolism