Protein must supplement, because the body excretes water 10 minutes before the start of exercise.

Salt is discharged after 10 minutes.

Protein will be discharged in 20 minutes.

If you don't do scientific exercise, you will form endocrine disorders.

You don't have to eat protein powder, but you usually eat more protein (you can eat complementary food).

Search the nutrition table online.

See which foods are high in protein.