They take aspects of carb cycling, mix it with a Keto diet, add within a sprinkle of carb back-loading, maybe some Jenny Todd. and pretty soon they just have a big pile of shit. The idea of a 1 or 2 day "carb-up" sounds appealing but it cannot be filled with junk as well as high fat foods. Fat burners in their natural form or as supplements will, no doubt go a long way in fighting obesity.