First of all, as a bodybuilder, you should understand the difference between them. After understanding the difference between the two, choose according to your own needs:

Whole milk and skimmed milk: protein and carbohydrates in skimmed milk are about 1/3 higher than those in general milk powder, and the contents of calcium, vitamins and phosphorus are also higher than those in general milk powder. The fat content in skim milk is very low, and the calories are much lower than ordinary milk powder. Full-fat milk powder basically maintains the nutritional components of milk and is suitable for consumers of all ages, especially young and middle-aged people. Skim milk, made of skim milk, has a light taste and is suitable for middle-aged and elderly people, obese people and consumers who are not suitable for fat intake. Full-fat milk has high nutrition and more comprehensive nutritional value, because it contains a lot of fat-soluble vitamins and tastes better, so it can't be said that full-fat milk is not as good as skim milk, and its nutritional value and energy are better than skim milk.

But as a fitness drink, muscles need more protein to grow after exercise, so as to increase the dimension of muscles, so I suggest you drink more skim milk, and of course you can also drink a little professional milk. After all, fitness needs a variety of nutrients.