Every year has its fads. And while some of these fads focus on the fun and fashionable things people are eating (unicorn bread, anyone?) many of the trends that develop focus on weight loss. When it comes to weight loss, people are willing to try all kinds of wild tactics, just so long as they're promised that the tricks are "healthy." Here are the most popular trends of the year (and a little advice on whether or not you should try them).