2. If all four kinds can be regarded as a balanced breakfast, three kinds can be regarded as qualified. If there are only two or less, in the long run, there will be malnutrition and lack of nutrition.
If there is only a bottle of milk and an egg for breakfast, then only two kinds of food are unqualified breakfast. Milk and eggs, or staple food, each food has a certain nutritional value. Only by reasonable collocation can it be absorbed and utilized by the human body to the maximum extent.
Extended data:
Fitness precautions
1, necessary warm-up activities: necessary process before starting exercise. The more relaxed a muscle is, the easier it is to control and expand. Doing these exercises will reduce your chances of getting hurt. Therefore, it is best to spend 5 minutes to get your body fully active and feel a little sweaty.
2. Extremely necessary stretching exercise: When you exercise a muscle, it will become tight and shortened. Stretching exercises help you relax your muscles, thus preventing muscle soreness the next day.
3. Don't overload weight lifting: blindly trying to lift things that exceed your physical load may lead to muscle strain, sprain and even injury to your back.
References:
Baidu encyclopedia-fitness (including diet)