Under normal circumstances, the nutrients needed for a day should be evenly distributed among the three meals. The calorie intake of each meal should account for about 1/3 of the total calories in the whole day, but lunch should not only supplement the calorie intake in the morning, but also provide energy for work and study in the afternoon, which can be more. So the calories of three meals a day should be 25-30% for breakfast, 40% for lunch and 30-35% for dinner.

People often say that the experience of "eat well early, eat well at noon and eat less at night" is reasonable. Breakfast should not only pay attention to quantity, but also pay attention to quality. Lunch should be more appropriate and of high quality. Eat less dinner, light and easy to digest, and eat at least two hours before going to bed.