Source:Fitness Black Book - “Bulking up is the common practice of gaining muscle as quickly as possible by eating a ton of calories. The idea is that you can gain more muscle if you insure a large calorie surplus in your diet. Along with muscle, quite a bit of fat is gained. The idea is to then burn the fat in the spring, revealing the newly acquired muscle for summer time. This is a common bodybuilding practice, but it is a BAD idea!” > Read the Full Article Here