Body fat tends to build to varied degrees during bulking owing to increased calorie consumption (1,2). Bodybuilders eat less calories than their bodies require during the cutting phase, which puts them at a disadvantage when it comes to muscle growth. The main reason for this is that they don't gain weight as easily as other people. To make up for this, they need to consume more food per pound of muscle mass than others. This is why bodybuilders get fat - because they have bigger appetites than average people. The amount of fat a bodybuilder gains depends on how much they eat. People who eat more tend to put on more weight. That's why it's important for you to monitor your intake and adjust accordingly. They also put on weight because they have a higher percentage of fat tissue in their bodies. This is normal for most people but not for bodybuilders - who can reach 20-30% body fat without any apparent health problems. As we'll see below, being fat leads to improved health outcomes. Finally, bodybuilders get fat because they lack exercise. When you don't use your muscles, they start to lose strength and tone. This means that you need to work out harder and more frequently if you want to keep your muscles defined.