In bodybuilding, protein is the main factor in building your body, giving it power and many vitamins that the body needs during training. It is very important to know what types of foods you eat and when. In bodybuilding, there are two diet periods called Bulking and Cutting. These two words are very common in gyms. Simply, we can say that bulking is about gaining weight, which is that period when bodybuilders consume a lot of calories to help them gain weight. Gain muscle while minimizing fat gains. You need to eat more than usual to increase your body mass,” which is the level of calories you need to maintain your current weight. As a general rule of thumb, if you eat 500 calories more per day than your TDEE, you will gain about 1 pound per week” (Chris). Most bodybuilders agree that gaining weight is very difficult because it takes longer to reach the appropriate weight. The other period of time is called cutting, which is the opposite of bulking. Basically, during this period, bodybuilders strive to eat foods high in protein and low in calories. Also, they should ignore all foods containing fats and carbohydrates. When gaining mass, the goal is to maintain the amount of muscle while eliminating all fat from the body. They usually do cutting when they have a show. For example, in many countries there are bodybuilding championships. Many bodybuilders participate.