Studies Eclipse Keto on overfeeding (the scientific term for binging on food) show that doing so can boost your metabolic rate by anywhere from 3-10%. While this sounds good, it actually doesn't mean much when you consider that you would need to eat a anywhere from a few hundred to a few thousand extra calories in a day to achieve this effect. More important are the effects cheating has on a hormone called leptin, which regulates hunger, your metabolic rate, appetite, motivation, and libido, as well as serving other functions in your body.