Hello, tomato alarm clock is most suitable for junior high school students to set 8 hours. Each child's sleep time will vary from person to person. Some children can meet their normal needs with relatively little sleep time, while others need a little longer time to keep them awake all day.

The sleep time of different ages will be different. The sleeping time of infants may be 13- 15 hours, and that of preschool children is about 1 hour. Primary school students should ensure about 10 hours of sleep, and junior high school students should try their best to ensure about 8 hours of sleep. The best time to sleep is between 1 1 and 6 am, so that children can get enough rest. Long-term lack of sleep will affect children's growth and development, and even affect their normal physical development. Children's growth hormone is usually secreted at night, especially when junior high school students enter adolescence. If the growth hormone secretion is not good, it will affect the development of height. Therefore, try to ensure that children can fall asleep after 1 1 at night and get up around 6: 00 in the morning, so that children can have adequate rest.