Probably because people aren't acting on it, or sticking with it long enough to actually see results.
Like telling penguins they need to flap harder to fly. The literature on diets on abysmal. People lose some weight and regain it, probably as willpower runs out. Look at all these celebrity weight loss shows over the past 2 decades--almost every contestant regains the weight, and these are people who have a lot of money and access to top chefs, trainers, etc.
Like telling penguins they need to flap harder to fly. The literature on diets on abysmal. People lose some weight and regain it, probably as willpower runs out. Look at all these celebrity weight loss shows over the past 2 decades--almost every contestant regains the weight, and these are people who have a lot of money and access to top chefs, trainers, etc.