Science has spent a lot of time and money to figure out why people regain weight they’ve lost. People will lose a lot of weight, and then it all comes back, usually with a bonus.
Traditional “common sense” says that it’s a failure of willpower. But how come someone can eat an utterly regimented 1,000 calories a day for a full year, and then not have enough willpower to stick to 1,800?
It’s not willpower.
