Fat burners are a category of nutritional supplement that can improve your body's ability to burn its own fat. Many fat burners are also believed to be able to markedly up your energy expenditure, improve fat oxidation when you work out, and boost weight loss efforts.

Fat burners work in a myriad of ways. Some fat burners may work via uncoupling, which means that it creates heat inside of a cell to burn fat. Others help to up the rate of your metabolism so your body is able to burn fat on its own. Some fat burners are believed to manipulate the enzymes in your body that are in control of your fat loss and gain.