Protein supplement is mainly obtained from animal protein 2 1 13 of poultry, fish and eggs, because the structure of animal protein and human protein are similar, and the utilization rate of 4 102 is also relatively high.

In addition, you can choose milk. Although the protein content of milk is not high, its utilization rate is relatively high (1653), which is relatively easy to obtain and can be used as a supplement to protein. In addition, you can also choose soy products, which is one of the sources of high-quality protein.