An egg a day will replenish the required protein, lecithin, etc. A glass of milk a day can replenish protein, calcium, etc. as follows: 1. Eating eggs has the following benefits: 1. Eggs contain lecithin and protein, which has a repairing effect on liver tissues, can promote liver cell regeneration, improve human plasma protein, and enhance the metabolic function of the body. 2. Egg yolks contain triglycerides, cholesterol, and lecithin, which have a role in the development of the nervous system and the body. 3. Eggs are rich in iron, which is an important raw material for hematopoiesis, thus achieving the effect of blood replenishment. 4. Eggs contain lutein, zeaxanthin, etc., which are good for the eyes. Drinking milk has the following benefits: 1. Milk contains lactose, which breaks down into glucose and galactose when it enters the body, providing energy for the body and promoting physical development. 2. Milk is rich in protein, which can supplement the body with high-quality protein, thus relieving muscle fatigue and improving muscle strength. 3. Milk contains a large amount of calcium, which provides rich raw materials for bone formation and can prevent osteoporosis. Although eggs and milk have many benefits, but it is not suitable for everyone to eat, especially high blood fat people and lactose intolerant people need to be careful to eat.