The chemical in chili peppers that makes them spicy, capsaicin enhances fat loss by first raising levels of the neurohormone norepinephrine, which increases metabolic rate. It has been found to elevate fat burning when taken an hour before aerobic exercise and can also decrease hunger. Look for capsaicin supplements that list Scoville thermal units, or heat units, with a dosage that supplies 40,000-80,000 units. You can also take 1/4 tsp of ground red pepper or cayenne pepper that lists the heat units.
Take 1 capsule containing 40,000-80,000 units 30 minutes before meals and one hour before cardio.