As far as the content of protein is concerned,100g of milk contains only about 3g of protein, which is very low. High-quality beef can contain 20 to 30 grams of protein in100g, which is basically equivalent to10g of milk. What's more, beef not only contains protein, but also has a low fat content. Fitness people want to supplement protein more and consume less fat, so that the muscles of the body can be effectively developed and the supply of nutrients can be guaranteed. Milk is not a better choice, because it is easy to eat a catty of beef, but it is not so easy to drink ten liters of milk.
People who exercise regularly like to eat beef and chicken breast, because these two kinds of meat have high protein content and low fat content, which are not easy to gain weight, can supplement nutrition and are relatively easy to do. Whether it is cooked with soy sauce or supplemented with other vegetables, it is a better choice, easy to preserve and easy to make. It's easy to have diarrhea after a long time of milk. And many people in China are lactose intolerant, and milk is not suitable for everyone. But eating beef is acceptable to most people, and there are many ways to make it, so it is easier to affect the supplement and more comprehensive when stored.
It's ok to drink milk, but don't take it as a channel that can really supplement protein. It can only be said that it is much healthier than ordinary drinks, but if we really want to supplement protein, we still need meat, such as beef. Compared with scientific experiments, the protein content of broccoli is higher than that of milk, and it can only be used as a daily drink. But not as the main way to supplement protein.