Nowadays, you do not have to starve yourself in order to have a lean body. With muscle building, you can prevent gaining fats as well as reduce your muscles to have a lean body during the cutting cycle.
Back then, weightlifters need to reduce body fats as competition nears. In doing so, their muscles also lose weight and strength that it becomes difficult to do their intense training. During muscle building, they need to take in lots of protein for their intense training; thus, they acquired high calorie content so they eventually gain fats.
Now, weightlifters can control fat gain buy having better comprehension of how our body processes the food we take in. Protein is very essential for muscle building. The amount of food that the body can process is limited to a certain point in given time interval. Eating big amounts of food must be replaced by frequent smaller amounts allowing better distribution of protein.
Furthermore, there is weightlifting protein supplements made available now. Weightlifters can eat any food like anybody else and still have their protein requirement on the desired standard. By maintaining a low calorie intake, fat gain is controlled as well as muscle gain is enhanced.