There are two main types of fat burners: those that contain stimulants, and those that do not contain stimulants.
Most (but not all) thermogenic fat burners contain stimulants, usually caffeine. Coffee fat burners are good for people who find it difficult to summon energy for an energetic workout or a long cardio session.
"[Caffeine] helps burn fat and helps athletes work harder for a long time in the gym and in sports, ”explains Robert Wildman, Ph.D., RD, in the article“ Increase your caffeine training. ”
Caffeine is also a powerful appetite suppressant for those who believe that their predatory craving interferes with their results. So yes, there is a very good reason that it is such a popular ingredient in fat supplements!
However, how effective caffeine is, it is far from the only ingredient in popular fat burners. And it becomes even more effective in combination with some others.
But to be clear, simply because the fat burner has more ingredients does not make it better! Especially if you're new to fat burning, focus on a few basic ingredients, such as this is a good place to start.
Green tea: It is shown that green tea and green tea extracts activate the thermogenic fatty activity of the body. A study published in American Journal of Clinical Nutrition found that men who took the active ingredient in green tea (catechins) significantly reduced the total fat area, waist circumference, skin thickness, and subcutaneous fat area. As physiologist Physicist Nick Cocker said in the article “Your expert guide to green tea,” using this caffeinated ingredient was even more effective.
L-carnitine: This amino acid-free amino acid has been an athlete’s secret weapon for decades. Taking it once or twice a day with food can also help your body convert stored fat into energy, leaving you leaner and more defined. He does this by breaking down the fatty acids so that the body can use them to produce fuel. As Jim Stoppani, Ph.D., in the “Your Expert Guide to L-Carnitine” explains, he was also shown in studies to support recovery after exercise, reduce muscle damage, and even reduce muscle-induced muscle pain.
CLA: Conjugated linoleic acid or CLA is a natural fatty acid like omega-6 fatty acid. Despite the fact that CLA is fat, studies show that consuming 1.4–3.0 g per day can lead to complete fat loss.[3,4] It can also help you maintain muscle during periods of weight loss, as explained by kinesiologist Ciaran Fairman, Ph.D., in the article “Your Expert Guide to CLA”. Remember that muscle is your ally for long-term success!
Yohimbin: This ingredient, made from the bark of the yohimbe tree, is a popular stimulant in burning fat. A well-known study has shown that fat loss results are significantly better than placebo among well-trained soccer players. However, more research is definitely needed, and yohimbine is not for everyone! If you are prone to anxiety or are very sensitive to stimulants, be careful when it comes to yohimbine. Some people find this to make them very nervous or anxious.
Garcinia cambogia: As a nutritionist Johnny Bowden, Ph.D., explains in the article “Fat-Loss Hope Or Hype: The Truth About Garcinia Cambogia”, this decaffeinated acidic fruit extract has become very popular in recent years. As long as you take it correctly, he explains that he can offer strong benefits with mouth-watering control.