One can get caffeine naturally in coffee, green tea and cocoa beans. It is the most common product that is used commercially in fat burning supplements.
It helps to boost metabolism and to burn fats. Within one or two hours, it helps to boost metabolism by 16%. No doubts, it increases the metabolic process but that tend to be more effective in lean people as compared to obese people.
However, excessive use of caffeine is also harmful because it makes body to become tolerant to its effect. It can cause heart palpitation, discomfort, dizziness and restlessness.
3. Green Tea Extract
Green tea extract, a concentrated form of green tea. It is available in powder and capsule form. It includes caffeine and polyphenol epigallocatechin gelatin (EGCG). Both of these compounds help to reduce fats. Both these compounds together perform a process known as thermogenesis. This process burns body calories for heat production.
Drinking two or three cups per day will give an effective and productive result.
Ginger tea also helps to burn fats. Drinking ginger tea on empty stomach will give the best results.