CICO is nonsense not in the sense that it's wrong, but because it's useless. It implies that the solution to obesity is either eating less or working out more.

CICO is nonsense not in the sense that it's wrong, but because it's useless. It implies that the solution to obesity is either eating less or working out more. However, both of these do not work for vast majority of people. Diets for example fail for 98% of people over 1 year of dieting. If people, try to eat less their body gets unhappy -- it starts to burn less calories. Furthermore, it starts ramping up your hunger trying to convince you that you are starving. Over a year it typically wins.