Thermogenic fat burner: These sort of fat burners mainly use the stimulants like Caffeine, Guarana or Yohimbe for enhancing the level of metabolism in the body. Thermogenic fat burners are totally free of ephedra.
Stimulant-free thermogenic fat burner: Like Thermogenic fat burner it does not contain any stimulants. In order to increase the fat-burning processes in the body it depends on the ingredients like the extract of green tea and grapefruit extract. Such types of the fat burners are ultimate for the people who get extreme nervousness from stimulants.
Carb blockers: However there is no such fat burner, Carb blockers reduces the ability of the body absorbing carbs. This minimizes the storage of carbs as the fat - eliminating the excess fat that your body would have produced.
Fat Blockers: Fat Blockers prevents production of fat getting absorbed by entangling it up in the digestive system to discharge the fat from the body. Though Fat Blockers are not the fat burners yet they keep the body from extracting and storing of fat from the food we eat