When it comes to dieting, research shows the majority of people will regain some – if not most – of the weight they’ve lost.While there are many reasons why this weight regain may happen, many assume it’s because dieting permanently wrecks your metabolism. But while it’s true that dieting can slow your metabolism, as shown in this study on Biggest Loser contestants, diet can also improve your metabolism in many positive ways.WHY GUESS WHEN YOU CAN TEST When we talk about weight loss, we really...