For as much attention as society pays to the weight loss and weight gain of women in prominent or visible positions, there are a lot of men feel that they aren't in the right weight class themselves. So, dieting for men is a big deal when it comes to self-confidence and health, whether you're trying to gain or lose weight. To approach the topic of dieting logically, it's important to understand different body types. Beyond that, you'll want to attach yourself either to a weight loss or a weight gain system, while also avoiding any extreme behavior. If it sounds too good to be true, be sure to be skeptical about any diet.