The main components of egg yolk are 17.5% protein, 32.5% fat, about 48.0% water and 2% minerals, as well as trace components such as vitamins.

Fitness people eat more protein and avoid fat, because protein is good for muscle growth.

Protein eats two eggs a day, even though he doesn't exercise. Egg yolk must be eaten. It is rich in lecithin, which is an essential nutrient for the brain. Don't worry about cholesterol. First, cholesterol is an indispensable substance in the body. Without it, calcium cannot be absorbed. Second, cholesterol intake from food only accounts for 5%, and most of it is synthesized in the process of self-metabolism. Third, exercise can lower cholesterol. Eating more fruits and vegetables, especially crude fiber food, will bring excess cholesterol out of the body.