Scientists in Massachusetts have done relevant experiments specially: they tested the work and rest of 100 students with smart bracelets, and then compared the work and rest time with the children's grades. They were surprised to find that children who stayed up late to study did not perform as well as those who went to bed early and got enough sleep.
In terms of causality, children's sleep is not directly related to their grades, but it will affect their grades.
Extended data 1, sleep time, affecting study habits.
An important reason why many children do their homework late is to play before doing their homework when they get home at night. Then, in order to let the children finish their homework, parents will urge them in various ways. Children know that they can't go to bed until they finish their homework. However, it is not difficult for children to stay up late. The difficulty is that they have no time to play.
So many children habitually do their homework late and then go to bed late.
For children, this actually seriously affects their study habits, procrastination and inefficiency.
2. Sleep duration affects learning efficiency.
No matter how late children go to bed, they need to get up at a certain time because they have to go to school. Because sleeping too late, this also makes the child's growth in sleep greatly reduced. Even many children go to primary school and sleep for only 6 or 7 hours a day.
The length of sleep has a great influence on children's learning efficiency. If the brain doesn't get enough rest, then the reaction speed naturally can't keep up, and the attention will be distracted. Naturally, you won't concentrate on the lecture in class, and your homework is naturally inefficient.
This is a vicious circle.