customized fat loss: Kyle Leon Fat Loss The Customized Fat Loss program has steadily gained popularity in the weight loss and fitness world since its release a couple of months back. This is undoubtedly a pleasant surprise for Kyle Leon, author of the program, given the fact that most fitness enthusiasts and dieters alike are usually skeptical about newly released diet programs, such as the Custom Fat Loss program. Like its name suggests, the system was designed around individualistic nutritional needs that are customized to specific user requirements.