Interval training is the way to go. You’ll burn more calories than any other workout both during the workout AND for 24 to 48 hours after. It gives you a great afterburn as well as stimulate your muscle building hormones.

Definition: Interval training involves alternating high intensity exercise with recovery periods. There are different ways to do interval training. One option is measured periods of work followed by measured periods of rest. An exampe would be 1 minute of high intensity work (such as a sprint), followed by 2 minutes of low intensity exercise (e.g., walking) and alternating that several times for 15-30 minutes.

You can also boost your metabolism with vitamin C supplements and some B-12 supplements.