If your diet consists of cake and ice cream, for example, you'll look and feel differently than if your diet consists of lean meat and vegetables. Protein has a higher thermic effect than carbohydrates and fats. read more
Getting lean in bodybuilding, as many have mentioned already, means to lose fat. Bodybuilders get lean through caloric deficits which they may do through cardio, diet change, or both. read more
Looking lean doesn't mean cutting out every single gram of sugar. For example, skipping your pre-workout or post-workout shakes just because they contain sugar is a bad idea. The carbohydrates, whey protein, and BCAAs found in a solid workout shake do much more good than harm. read more