Fat burners are usually used by: 1.) Number One Keto individuals who are just starting to lose weight and planning on a diet and exercise program; 2.) dieters who need help to break the weight loss plateau periods; and 3.) people who are excessively overweight or obese. These supplements contain ingredients like caffeine and green tea extract and helps suppress appetite, promote healthy insulin metabolism, and enhance mental focus. Thermogenic fat burners improve the weight loss effect combined with a healthy diet and an exercise program.