A "Fat Burner" refers to a type of supplement designed to help individuals lose weight by increasing metabolism, reducing appetite, or enhancing fat oxidation. These products often contain ingredients like caffeine, green tea extract, or other herbal compounds that may promote energy expenditure and fat breakdown. While some people use fat burners to support their weight loss goals, it's important to note that they are not a substitute for a healthy diet and regular exercise. Results can vary, and potential side effects should be considered. Always consult a healthcare professional before starting any new supplement regimen.