It doesn't matter whether you are male or female, low calorie dieting slows your metabolism, making it progressively more difficult to lose weight and keep it off. The failure rate of most diets is astronomical, yet people continue to try one after another, always hoping that each new scheme will provide the solution. If you're a veteran of the diet wars, the one word answer to your dilemma should be muscle. Let's take a look at why diets often fail and how strength training (exercise) can rev up your metabolism.

Following our list of quotes from St Thomas Aquinas, this is the second in our series of famous quotes from great atheists and great religious minds. Here are 15 quotes from some of the greatest atheist minds in history.